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Hedman 66451

Standard Duty HTC Coated Full-Length Headers 1988-95 GM C2500/C3500 454

Hedman 66451

500-66451

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Ships 12/15/16 if Ordered Today
Hedman 66451 Standard Duty HTC Coated Full-Length Headers 1988-95 GM C2500/C3500 454 $552.99
Standard Duty HTC Coated Full-Length Headers
  • 1988-95 GM C2500/C3500 454
  • 1-3/4" Tube, 3" Collector

  • Hedman 66451 Details

    GM Trucks

  • With A.I.R. system
  • Late model chassis, engine offset to passenger side
  • Due to cylinder heads (aluminum), Generation 6 BB-Chevy 502 will have clearance problems on some applications. Bottom of header flanges may hit head bolts. Notching may be necessary.
  • Designed for use with Trans-Dapt throttle body spacer
  • Not legal for sale or use in California
  • Modification to stock exhaust required to retain catalytic converter
  • Not applicable or intended for street or highway use (legal only for racing vehicles which may never be used on a highway)

  • Specifications:

    Tube Size
    1.75
    Collector Tube Size (in.)
    3
    Application
    Automotive
    Tube Direction
    Down Swept
    Coating/Finish
    Metallic Ceramic
    Port Shape
    Rectangle
    Material
    Steel
    Engine Make/Size
    Chevy 7.4L (Vortec)
    Collector Diameter (in.)
    3
    Gaskets Included
    Yes
    Bolts/Studs Included
    Yes
    Catalytic Converter(s) Included
    No
    Collector Attachment
    Ball and socket flange
    Cross Over Pipe Included
    No
    Header Finish
    Silver ceramic coated
    Header Material
    Steel
    Header Style
    Full-length
    Motor Mounts Included
    No
    Primary Tube Diameter (in.)
    1 3/4
    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:
    66451

    These standard-duty Hedman HTC Coated Headers come from the factory with an extremely durable, protective ceramic-metallic coating. 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. All Hedman street headers are MADE IN THE USA and backed by a lifetime warranty against manufacturing defects! The HTC coating is covered for a full five years.

    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.

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

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

  • Does Hedman 66451 fit your vehicle?

    Narrow Results

    1994-1995 CHEVROLET C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1994-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: WT
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1994-1995 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SLT
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1994-1995 GMC C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SL
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1991-1993 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SLX
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1991-1992 CHEVROLET C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1993 GMC C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1991-1993 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1994-1995 GMC C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SLT
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1991-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1993 GMC C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SLX
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1995 CHEVROLET C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1991-1995 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SLE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1995 CHEVROLET C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SILVERADO
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1994-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1995 GMC C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SLE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1994-1995 GMC C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SIERRA SL
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1988-1992 CHEVROLET C3500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1991-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Modification To Stock Exhaust Required To Retain Catalytic Converter~Engine Offset To Passenger Side Of Vehicle~Elite Replacement Gasket PN[27550]~Without Smog Injection Or Injection Heads~Designed For Use With A Trans-Dapt Throttle Body Spacer~502 Big Block Chevy Will Have Clearance Problems On Some Applications
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )
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