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Hedman 66231

Standard Duty HTC Coated Full-Length Headers 1967-81 GM K/V Series Truck/SUV 283-400

Hedman 66231

500-66231

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Hedman 66231 Standard Duty HTC Coated Full-Length Headers 1967-81 GM K/V Series Truck/SUV 283-400 $619.99
Standard Duty HTC Coated Full-Length Headers
  • 1967-81 GM K/V Series Truck/SUV 283-400
  • 1-5/8" Tube, 3" Collector
  • EO#D167-27

  • Hedman 66231 Details

    GM Trucks

  • With A.I.R. system
  • Must modify rotary A/C bracket
  • Includes parts necessary to retain emission devices (50-state legal for 1975-81 only)
  • Not legal for sale or use in California on pollution-controlled vehicles
  • Some vehicles may encounter clutch shaft interference when cross shaft location is located under or behind the driver's side rear exhaust port. Use #500-69092 without A.I.R. Use #500-69093 with A.I.R.
  • Modification to stock exhaust required to retain catalytic converter
  • For 1964-74 vehicles with A.I.R. system (considered OE replacement when existing emission controls are not removed from vehicle)

  • Specifications:

    Tube Size
    1.625
    Collector Tube Size (in.)
    3
    Application
    Automotive
    Engine Make/Size
    Chevy Small Block (262-400)
    Tube Direction
    Down Swept
    Coating/Finish
    Metallic Ceramic
    Port Shape
    Round
    Material
    Steel
    Gaskets Included
    Yes
    Collector Diameter (in.)
    3
    Bolts/Studs Included
    Yes
    CARB EO Number
    D-167-26 (pdf)
    Catalytic Converter(s) Included
    No
    Collector Attachment
    Ball and socket flange
    Cross Over Pipe Included
    No
    Cylinder Head Port Shape
    Oval
    Header Finish
    Silver ceramic coated
    Header Material
    Steel
    Header Style
    Full-length
    Motor Mounts Included
    No
    Primary Tube Diameter (in.)
    1 5/8
    Primary Tube Gauge
    18-gauge
    Quantity
    Sold as a pair
    Reducers Included
    Yes
    Transmission Mount Included
    No
    Tuned
    No
    Weld-Up
    No
    Flange Style
    Standard
    Manufacturer's Part Number:
    66231

    Hedman's HTC Hi-Tech Coated Headers come pre-coated from the factory with a protective ceramic-metallic finish. This coating provides a durable, shiny finish that helps lower under hood temperatures. Hedman Hedders pioneered the automotive application of ceramic-metallic coatings in the early 1980s. Previously exclusive to the aerospace industry, Hedman Hedders recognized the coating's potential to improve both the lifespan and functionality of exhaust headers while adding performance, flow and protection. Made in the USA.

    Features:
  • Coating offers protection up to 1400°.
  • Won't chip, peel, or "blue" like chrome.
  • Superior heat insulation.
  • Increased exhaust velocity for more power.

    NOTE: Installing coated headers on an engine during the break-in period will cause discoloration. The use of factory manifolds or an old set of headers is recommended while breaking in an engine.

    JEGS Easy Kits are designed by JEGS Professionals to help you get all the performance parts you need.

  • Does Hedman 66231 fit your vehicle?

    Narrow Results

    1982-1986 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 GMC K25/K2500 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1970-1971 CHEVROLET K10 SUBURBAN

    • CC: 5736
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1991 CHEVROLET K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 GMC K15/K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1968 GMC K25/K2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1988-1991 CHEVROLET K2500 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1980 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1980 GMC K2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979-1986 GMC K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 GMC K1500 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1976-1978 GMC K15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988-1991 GMC K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA SLE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 CHEVROLET K20 SUBURBAN

    • CC: 5736
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988-1991 CHEVROLET K2500 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: CHEYENNE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1978 GMC K15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1986 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1991 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA SLE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1986 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1988-1991 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1980 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1989-1991 CHEVROLET V2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA GRANDE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1980 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1982-1985 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1969 CHEVROLET K10 SUBURBAN

    • CC: 5736
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979 CHEVROLET K10 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1987 CHEVROLET BLAZER

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1985-1986 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1991 CHEVROLET K1500 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: CHEYENNE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1972-1973 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1972-1973 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1970-1971 CHEVROLET K10 SUBURBAN

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1967 GMC K25/K2500 SUBURBAN

    • CC: 5358
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1984-1986 CHEVROLET K10 SUBURBAN

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1970-1971 CHEVROLET K10 PICKUP

    • CC: 5736
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1990 CHEVROLET BLAZER

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1979 GMC JIMMY

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: HIGH SIERRA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 GMC K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1975-1979 GMC JIMMY

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1982 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969 CHEVROLET K20 SUBURBAN

    • CC: 6489
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1987 CHEVROLET V20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1967-1968 CHEVROLET K10 PICKUP

    • CC: 5358
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1986 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: HIGH SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988-1991 GMC K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1986 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1967 CHEVROLET K10 SUBURBAN

    • CC: 4638
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1979-1980 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1983 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1975-1980 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1980 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979 GMC K2500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1983 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1967 CHEVROLET K20 SUBURBAN

    • CC: 5358
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1967 CHEVROLET SUBURBAN

    • CC: 5358
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1975-1980 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981-1986 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1986 CHEVROLET K10 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988-1991 GMC K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: INDY HAULER
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K25 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 GMC K15/K1500 SUBURBAN

    • CC: 5358
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1987 GMC JIMMY

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • EngineType: ALL
    • SubModel: ALL

    1982-1985 GMC K1500 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: HIGH SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1974 CHEVROLET BLAZER

    • CC: 5737
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970 CHEVROLET K10 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975-1979 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1969 CHEVROLET BLAZER

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1967 CHEVROLET K20 PICKUP

    • CC: 4638
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1977-1978 CHEVROLET K20 SUBURBAN

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973-1974 CHEVROLET K20 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1988-1991 GMC K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: SIERRA SLE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1986 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET BLAZER

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1987 CHEVROLET V10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985-1986 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1978 GMC K25 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1968 CHEVROLET K10 PICKUP

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1968 GMC K25/K2500 SUBURBAN

    • CC: 5031
    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1987 GMC V2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987 GMC V1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 GMC K1500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1970-1991 GMC JIMMY

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1986 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1981 CHEVROLET K10 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1972 GMC K25/K2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Must Modify Rotary A/C Bracket~Clutch Shaft Interference When Cross Shaft Under Drivers Side Exhaust Port~Early Chassis Only~Elite Replacement Gasket PN[27520]~A/C Equipped Vehicles Require Large Piston Compressor Bracket PN[20110]~This Model Is Recommended For Use With Lift Kits
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )
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