Flowtech Real Seal Header Gasket Big Block
387-99153

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Chevy Big Block
Specifications:
FlowTech REAL-SEAL header and collector gaskets are a revolutionary break-through in exhaust sealing technology! Constructed of multiple layers of "Dead Soft" aluminum for a reliable and reusable seal, the individual layers allow the gasket to conform to imperfections in the cylinder head and the header. Out of the box are designed to work with the FlowTech's Afterburner and Shorty Smog headers but they are easily trimmed for applications that require custom port matching. !
Features:Does Flowtech 99153 fit your vehicle?
1980 GMC C3500
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1972 CHEVROLET MONTE CARLO
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum; This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled [Non-Emissions Controlled] Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: V
1989 GMC V3500
- Liter: 7.4
- SubModel: HIGH SIERRA
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum; This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled [Non-Emissions Controlled] Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1973 GMC C15/C1500 PICKUP
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
1976 CHEVROLET K5 BLAZER
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1971 CHEVROLET EL CAMINO
- Liter: 7.4
- SubModel: CUSTOM
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: -
1977 CHEVROLET K30
- Liter: 7.4
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: S
1969 CHEVROLET CAPRICE
- Liter: 7
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 427
- Engine Type: V8 ( 7L / 427 )
- Engine Vin: -
1972 CHEVROLET CHEVELLE
- Liter: 6.6
- SubModel: CONCOURS ESTATE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 402
- Engine Type: V8 ( 6.6L / 402 )
- Engine Vin: U
1981 CHEVROLET K30
- Liter: 7.4
- SubModel: DELUXE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: W
1972 CHEVROLET EL CAMINO
- Liter: 7.4
- SubModel: BASE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: V
1975 CHEVROLET C10
- Liter: 7.4
- SubModel: CHEYENNE
- Aspiration: NATURALLY ASPIRATED
- Fitment Notes: 1 Pair Header Flange Gaskets; Rear Seal; Round Port; Dead Soft Layered Aluminum
- CUI: 454
- Engine Type: V8 ( 7.4L / 454 )
- Engine Vin: Z
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.