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Flowtech Header Replacement Gasket Set Small Block Chevy Flowtech Full Length Headers Includes 2.5" and 3" Collector Gaskets in Pairs

387-99161


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Flowtech 99161
$11.23
1 left in stock
Header Replacement Gasket Set
  • Small Block Chevy
  • Flowtech Full Length Headers
  • Includes 2.5'' and 3'' Collector Gaskets in Pairs
  • Ships
    Save $10 off $150+, $20 off $250+, $40 off $500+, $100 off $1,200+ Orders. Promo Code: 2020SAVINGS exclusions apply
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    1967  GMC C15/C1500 PICKUP

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1968-1971  PONTIAC LEMANS

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1971  PONTIAC LEMANS

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  CHEVROLET G10 VAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969  CHEVROLET BISCAYNE

    • Liter: 5.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: FB
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1979-1986  GMC K3500

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  CHEVROLET G10 VAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970  CHEVROLET C10 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1972  GMC C25/C2500 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET C10

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BIG TEN
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1969  CHEVROLET CHEVELLE

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 300 DELUXE
    • Engine Vin: DC
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1974  CHEVROLET K10 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969  CHEVROLET CHEVELLE

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CONCOURS
    • Engine Vin: DC
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1970  CHEVROLET C10 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1967  GMC C25/C2500 PICKUP

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1977-1978  GMC C25

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1972  GMC G25/G2500 VAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1977-1978  CHEVROLET K20 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976  GMC C25

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET C10

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976  CHEVROLET MONZA

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 2+2
    • Engine Vin: Q
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1978  PONTIAC GRAND LEMANS

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SAFARI
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1972-1974  CHEVROLET BEL AIR

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  CHEVROLET CAMARO

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: LT
    • Engine Vin: Q
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980-1981  CHEVROLET C20

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978  CHEVROLET NOVA

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1955  GMC 150-22

    • Liter: 4.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 288
    • EngineType: V8 ( 4.7 L / 288 )

    1958-1959  GMC 250

    • Liter: 5.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 337
    • EngineType: V8 ( 5.5 L / 337 )

    1967  GMC K25/K2500 PICKUP

    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1972-1974  CHEVROLET BEL AIR

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC C25

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1968  GMC C15/C1500 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1976  GMC C25

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET C10 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980  CHEVROLET C10

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976  CHEVROLET MONZA

    • Liter: 4.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: G
    • CUI: 262
    • EngineType: V8 ( 4.3 L / 262 )

    1980  CHEVROLET K30

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC K3500

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1969-1971  CHEVROLET CAPRICE

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979  PONTIAC LAURENTIAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1981  GMC G2500

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: RALLY STX
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1971  GMC K15/K1500 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971  CHEVROLET CHEVELLE

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CONCOURS ESTATE
    • Engine Vin: -
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1970  CHEVROLET EL CAMINO

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: K
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976  CHEVROLET CAPRICE

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CLASSIC LANDAU
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1957  CHEVROLET TWO-TEN SERIES

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1958  GMC PM252

    • Liter: 5.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 336
    • EngineType: V8 ( 5.5 L / 336 )

    1980-1981  CHEVROLET G20

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: NOMAD
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1986  CHEVROLET CAMARO

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORT
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1972-1974  PONTIAC LEMANS

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  CHEVROLET C10

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971  CHEVROLET K10 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971-1972  GMC SPRINT

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1958-1959  GMC 250

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 337
    • EngineType: V8 ( 5.5 L / 337 )

    1973  CHEVROLET C20 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1973-1974  CHEVROLET G20 VAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1986  GMC K2500

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC G25

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VANDURA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  CHEVROLET G30

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BEAUVILLE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1974  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC C25

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1973-1974  CHEVROLET C20 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969  CHEVROLET EL CAMINO

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1980  GMC K1500

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1983  CHEVROLET K30

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1971  CHEVROLET BEL AIR

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC C25

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968  GMC C25/C2500 SUBURBAN

    • Liter: 5.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1977-1980  CHEVROLET K30

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  CHEVROLET MALIBU

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CLASSIC
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  CHEVROLET LAGUNA

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970  GMC C35/C3500 PICKUP

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1980  CHEVROLET C10 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1983-1986  PONTIAC GRAND PRIX

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BROUGHAM
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1972  GMC K15/K1500 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  CHEVROLET MONZA

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 4.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: G
    • CUI: 262
    • EngineType: V8 ( 4.3 L / 262 )

    1979  GMC K2500 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET K30

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970-1971  CHEVROLET TOWNSMAN

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979-1980  GMC K3500

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979  PONTIAC LEMANS

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SAFARI
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970  PONTIAC CATALINA

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VENTURA
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1981  GMC G2500

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: RALLY STX
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1971  GMC SPRINT

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1978  BUICK SKYLARK

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1971  GMC K25/K2500 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1968  GMC C15/C1500 PICKUP

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1969  PONTIAC FIREBIRD

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971  CHEVROLET CHEVELLE

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SS
    • Engine Vin: -
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1970  CHEVROLET G20 VAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1985-1986  CHEVROLET K10 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1955-1956  GMC F370

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 316
    • EngineType: V8 ( 5.2 L / 316 )

    1957  GMC PM153

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 347
    • EngineType: V8 ( 5.7 L / 347 )

    1972-1975  CHEVROLET BEL AIR

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1958  GMC PM252

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 336
    • EngineType: V8 ( 5.5 L / 336 )

    1975-1976  GMC C25 SUBURBAN

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1986  CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1974  PONTIAC PARISIENNE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  CHEVROLET NOVA

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976  CHEVROLET C10

    • Fitment_Note: Incl. 1 Pair Head Flange Gaskets/1 Pair 2.5 in. Exhaust Collector Gaskets/1 Pair 3 in. Exhaust Collector Gaskets; 1 Pair Full Length Header Gaskets
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )
    99161 - FlowTech Header Replacement Gasket Sets is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from Fits RIGHT Bought This and I am Happy I Did. R & R in less than an hour.
    Date published: 2014-11-01
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    the 3'' gasket is the inner diameter?

    Asked by: Sean67
    Yes, they will work with any 3" collector.
    Answered by: Dean R
    Date published: 2018-02-20
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    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.