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View All FlowTech Real Seal Exhaust Gaskets

Flowtech Real Seal Header Gasket Big Block

Flowtech 99153 Details

Chevy Big Block

Water/Weather Resistant

Re-Useable

Will Not Burn Or Blow Out

Suitable For Port-Matching

Made In USA

Specifications:

Gasket Material

Aluminum

Port Style

Round port

Quantity

Sold as a pair

Material

Aluminum

Port Shape

Round

Manufacturer's Part Number:

99153FLT

Shipping Weight:

.45

Package Height:

21.100

Package Depth:

.800

Package Width:

3.900

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:

Reusable design will not burn or blow out

Perfect for applications that require port matching

Multi-Layer aluminum conforms to create a leak-proof seal

Water and weather resistant

Does Flowtech 99153 fit your vehicle?

Narrow Results

Filter By
Year

1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990

Filter By
Make

CHEVROLET GMC

Filter By
Model

Filter By
SubModel

Filter By
EngineType

V8 ( 6.5 L / 396 ) V8 ( 6.6 L / 402 ) V8 ( 7.0 L / 427 ) V8 ( 7.4 L / 454 )

Filter By
CC

6489 6588 6998 7439 7441

Filter By
Liter

6.5 6.6 7.0 7.4

Filter By
Aspiration

1973-1974 GMC C35/C3500 PICKUP

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1978 GMC C35/C3500 PICKUP

Liter: 7.4
SubModel: HIGH SIERRA
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1978 GMC C35/C3500 PICKUP

Liter: 7.4
SubModel: SIERRA CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1976-1977 GMC K25 SUBURBAN

Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1981 CHEVROLET C30 PICKUP

Liter: 7.4
SubModel: DELUXE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1978 GMC C35/C3500 PICKUP

Liter: 7.4
SubModel: SIERRA GRANDE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1976-1978 GMC K25 PICKUP

Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1980 CHEVROLET K20 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 GMC K25/K2500 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1975-1986 CHEVROLET C30 PICKUP

Liter: 7.4
SubModel: SCOTTSDALE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1979-1982 GMC C3500 PICKUP

Liter: 7.4
SubModel: SIERRA GRANDE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1976 CHEVROLET IMPALA

Liter: 7.4
SubModel: S
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1976-1977 GMC K25 SUBURBAN

Liter: 7.4
SubModel: HIGH SIERRA
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 CHEVROLET K30 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1968-1969 GMC K1500 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1989-1990 CHEVROLET V3500 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1973-1974 GMC K25/K2500 PICKUP

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1988-1990 CHEVROLET C3500 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1986 CHEVROLET C30 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1988-1990 GMC C3500 PICKUP

Liter: 7.4
SubModel: SIERRA SLE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1976 CHEVROLET IMPALA

Liter: 7.4
SubModel: SPORT
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1976-1977 GMC K25 SUBURBAN

Liter: 7.4
SubModel: SIERRA CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1978-1980 CHEVROLET C10 PICKUP

Liter: 7.4
SubModel: BIG TEN
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1969 CHEVROLET K30 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1972 CHEVROLET C10 PICKUP

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1989-1990 CHEVROLET R2500 SUBURBAN

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 CHEVROLET K10 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1976 GMC K1500 PICKUP

Liter: 7.4
SubModel: SIERRA CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1971 CHEVROLET BISCAYNE

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1970-1971 CHEVROLET CORVETTE

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1969 GMC C15/C1500 SUBURBAN

Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1970-1972 CHEVROLET CHEVELLE

CC: 7441
Liter: 7.4
SubModel: MALIBU
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 GMC K25/K2500 SUBURBAN

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1975 GMC SPRINT

Liter: 6.6
SubModel: SP
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1971 CHEVROLET CAMARO

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1988-1990 CHEVROLET C3500 PICKUP

Liter: 7.4
SubModel: CHEYENNE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1973-1974 CHEVROLET LAGUNA

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975 CHEVROLET MONTE CARLO

Liter: 7.4
SubModel: S
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1988-1990 GMC C3500 PICKUP

Liter: 7.4
SubModel: SIERRA SLX
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975 GMC SPRINT

Liter: 7.4
SubModel: CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1979-1980 CHEVROLET K10 PICKUP

Liter: 7.4
SubModel: CHEYENNE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1970 CHEVROLET CHEVELLE

CC: 6588
Liter: 6.6
SubModel: CONCOURS ESTATE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1976-1977 GMC K25 SUBURBAN

Liter: 7.4
SubModel: SIERRA GRANDE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1980 CHEVROLET C10 PICKUP

Liter: 7.4
SubModel: CHEYENNE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1970-1971 CHEVROLET K30 PICKUP

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1987 CHEVROLET R20 SUBURBAN

Liter: 7.4
SubModel: CUSTOM DELUXE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1980 CHEVROLET C10 PICKUP

Liter: 7.4
SubModel: SCOTTSDALE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1969 GMC C35/C3500 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1987-1988 CHEVROLET R30 PICKUP

Liter: 7.4
SubModel: SCOTTSDALE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1989-1990 CHEVROLET R3500 PICKUP

Liter: 7.4
SubModel: CHEYENNE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1969 CHEVROLET K10 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1979-1986 GMC C2500 SUBURBAN

Liter: 7.4
SubModel: HIGH SIERRA
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1979-1980 GMC K1500 PICKUP

Liter: 7.4
SubModel: SIERRA CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1972 CHEVROLET BROOKWOOD

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1971-1972 CHEVROLET KINGSWOOD

CC: 6588
Liter: 6.6
SubModel: ESTATE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1987-1989 GMC R3500 PICKUP

Liter: 7.4
SubModel: SIERRA CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1969 CHEVROLET EL CAMINO

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1970 CHEVROLET MONTE CARLO

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1978 CHEVROLET K5 BLAZER

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 GMC C15/C1500 SUBURBAN

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1970-1971 CHEVROLET EL CAMINO

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1972 CHEVROLET BISCAYNE

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968-1969 CHEVROLET CHEVELLE

CC: 6489
Liter: 6.5
SubModel: NOMAD
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1975-1978 GMC C25/C2500 PICKUP

Liter: 7.4
SubModel: SIERRA GRANDE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1974 GMC K25/K2500 SUBURBAN

Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1973 CHEVROLET CAPRICE

CC: 7441
Liter: 7.4
SubModel: ESTATE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1969 CHEVROLET EL CAMINO

CC: 6489
Liter: 6.5
SubModel: CUSTOM
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1972 CHEVROLET CAMARO

CC: 6588
Liter: 6.6
Aspiration: N
SubModel: BASE
Engine Vin: U
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1968-1969 CHEVROLET CAMARO

CC: 6489
Liter: 6.5
SubModel: SS
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1973-1974 CHEVROLET C20 SUBURBAN

Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1973 GMC JIMMY

Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1972 CHEVROLET CHEVELLE

CC: 6588
Liter: 6.6
SubModel: CONCOURS ESTATE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1975 CHEVROLET MALIBU

Liter: 7.4
SubModel: CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1973 CHEVROLET MONTE CARLO

CC: 7441
Liter: 7.4
SubModel: S
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1977 CHEVROLET K30 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1976 GMC G25/G2500 VAN

Liter: 7.4
SubModel: RALLY
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968-1969 CHEVROLET CHEVELLE

CC: 6489
Liter: 6.5
SubModel: 300 DELUXE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1974 GMC SPRINT

Liter: 6.6
SubModel: CUSTOM
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1987-1989 GMC R2500 PICKUP

Liter: 7.4
SubModel: SIERRA CLASSIC
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1976 CHEVROLET K10 PICKUP

Liter: 7.4
SubModel: CUSTOM DELUXE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1973-1974 CHEVROLET MONTE CARLO

CC: 7441
Liter: 7.4
SubModel: LANDAU
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1972 CHEVROLET CHEVELLE

CC: 6588
Liter: 6.6
SubModel: GREENBRIER
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1969 GMC K25/K2500 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1968 CHEVROLET C20 SUBURBAN

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1989-1990 GMC G35/G3500 VAN

Liter: 7.4
SubModel: RALLY CAMPER SPECIAL
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1975-1980 CHEVROLET C10 PICKUP

Liter: 7.4
SubModel: CUSTOM DELUXE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1977 CHEVROLET K30 PICKUP

Liter: 7.4
SubModel: CUSTOM DELUXE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968-1969 CHEVROLET IMPALA

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1974-1975 GMC SPRINT

Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1987-1988 CHEVROLET R20 SUBURBAN

Liter: 7.4
SubModel: SCOTTSDALE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1972 CHEVROLET KINGSWOOD

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1971 CHEVROLET BEL AIR

CC: 6588
Liter: 6.6
SubModel: BASE
CUI: 402
EngineType: V8 ( 6.6 L / 402 )

1975-1980 CHEVROLET C10 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1977-1980 GMC C1500 PICKUP

Liter: 7.4
SubModel: HEAVY HALF
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 GMC C35/C3500 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1987-1988 CHEVROLET R30 PICKUP

Liter: 7.4
SubModel: SILVERADO
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1968 CHEVROLET K20 PICKUP

CC: 6489
Liter: 6.5
SubModel: BASE
CUI: 396
EngineType: V8 ( 6.5 L / 396 )

1989-1990 CHEVROLET R3500 PICKUP

Liter: 7.4
SubModel: SCOTTSDALE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1990 GMC V3500 PICKUP

Liter: 7.4
SubModel: SLE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1970 CHEVROLET EL CAMINO

CC: 7441
Liter: 7.4
SubModel: BASE
CUI: 454
EngineType: V8 ( 7.4 L / 454 )

1 2 ... 4 >

99153 - FlowTech Real Seal Exhaust Gaskets is rated 5.0 out of 5 by 1.

Rated 5 out of 5 by Chance Young from Great product. Made with exceptional quality This original gasket is the best quality versus anything else on the market. Thanks Jegs for carrying this item. Great customer service with no hiccups. That's why I continue to use Jegs!!

Date published: 2016-01-08

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Flowtech Real Seal Header Gasket Big Block

Part Number: 387-99153

Flowtech 99153 Details

Specifications:

Does Flowtech 99153 fit your vehicle?

1973-1974 GMC C35/C3500 PICKUP

1975-1978 GMC C35/C3500 PICKUP

1975-1978 GMC C35/C3500 PICKUP

1976-1977 GMC K25 SUBURBAN

1981 CHEVROLET C30 PICKUP

1975-1978 GMC C35/C3500 PICKUP

1976-1978 GMC K25 PICKUP

1980 CHEVROLET K20 PICKUP

1968 GMC K25/K2500 PICKUP

1975-1986 CHEVROLET C30 PICKUP

1979-1982 GMC C3500 PICKUP

1976 CHEVROLET IMPALA

1976-1977 GMC K25 SUBURBAN

1968 CHEVROLET K30 PICKUP

1968-1969 GMC K1500 PICKUP

1989-1990 CHEVROLET V3500 PICKUP

1973-1974 GMC K25/K2500 PICKUP

1988-1990 CHEVROLET C3500 PICKUP

1975-1986 CHEVROLET C30 PICKUP

1988-1990 GMC C3500 PICKUP

1975-1976 CHEVROLET IMPALA

1976-1977 GMC K25 SUBURBAN

1978-1980 CHEVROLET C10 PICKUP

1969 CHEVROLET K30 PICKUP

1972 CHEVROLET C10 PICKUP

1989-1990 CHEVROLET R2500 SUBURBAN

1968 CHEVROLET K10 PICKUP

1976 GMC K1500 PICKUP

1971 CHEVROLET BISCAYNE

1970-1971 CHEVROLET CORVETTE

1969 GMC C15/C1500 SUBURBAN

1970-1972 CHEVROLET CHEVELLE

1968 GMC K25/K2500 SUBURBAN

1975 GMC SPRINT

1971 CHEVROLET CAMARO

1988-1990 CHEVROLET C3500 PICKUP

1973-1974 CHEVROLET LAGUNA

1975 CHEVROLET MONTE CARLO

1988-1990 GMC C3500 PICKUP

1975 GMC SPRINT

1979-1980 CHEVROLET K10 PICKUP

1970 CHEVROLET CHEVELLE

1976-1977 GMC K25 SUBURBAN

1975-1980 CHEVROLET C10 PICKUP

1970-1971 CHEVROLET K30 PICKUP

1987 CHEVROLET R20 SUBURBAN

1975-1980 CHEVROLET C10 PICKUP

1969 GMC C35/C3500 PICKUP

1987-1988 CHEVROLET R30 PICKUP

1989-1990 CHEVROLET R3500 PICKUP

1969 CHEVROLET K10 PICKUP

1979-1986 GMC C2500 SUBURBAN

1979-1980 GMC K1500 PICKUP

1972 CHEVROLET BROOKWOOD

1971-1972 CHEVROLET KINGSWOOD

1987-1989 GMC R3500 PICKUP

1969 CHEVROLET EL CAMINO

1970 CHEVROLET MONTE CARLO

1978 CHEVROLET K5 BLAZER

1968 GMC C15/C1500 SUBURBAN

1970-1971 CHEVROLET EL CAMINO

1972 CHEVROLET BISCAYNE

1968-1969 CHEVROLET CHEVELLE

1975-1978 GMC C25/C2500 PICKUP

1974 GMC K25/K2500 SUBURBAN

1973 CHEVROLET CAPRICE

1969 CHEVROLET EL CAMINO

1972 CHEVROLET CAMARO

1968-1969 CHEVROLET CAMARO

1973-1974 CHEVROLET C20 SUBURBAN

1973 GMC JIMMY

1972 CHEVROLET CHEVELLE