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FlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLT

FlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLT
FlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLTFlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLTFlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLTFlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLTFlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLTFlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLTFlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLT
$131.99 ea
NEWARRIVING SOONEstimated Ship Date 06/09/2025 (If Ordered Today)20 Available from HOLLEY PERFORMANCE PRODUCTS as of 05/19/2025
Model: 4006315
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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DELIVERY
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[More Info]
FLOWTECH REAL-SEAL header and collector gaskets are a revolutionary break-through in exhaust sealing technology. Constructed of separate layers of "Dead Soft" aluminum, REAL SEALS provide a do-it-once solution that will not burn or blow out. REAL-SEAL gaskets will work when an o-ringed gasket will not because the "Dead Soft" aluminum conforms to create a leak-proof seal. REAL-SEALS can also be easily trimmed for port-matching and you can use them over and over again.
Features:
  • Suitable For Port-Matching
  • Will Not Burn Or Blow Out
  • Re-Useable
  • Water/Weather Resistant
  • Multi-Layer "Dead Soft" aluminum conforms to create a leak-proof seal
  • Made In USA
Fits only with port shape listed. Please verify port shape on headers and match to proper gasket.
Installation Notes:
Fits only with port shape listed. Please verify port shape on headers and match to proper gasket.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
Buick Skylark 1977 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Buick Skylark 1978 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Buick Skylark 1979 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1964 4.6L / 283 / V8
5.3L / 327 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1965 4.6L / 283 / V8
5.4L / 327 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1966 4.6L / 283 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1967 4.6L / 283 / V8
5.4L / 327 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1968 5.0L / 307 / V8
5.4L / 327 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1969 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1970 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1971 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1972 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Chevelle 1973 5.0L / 307 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1964 5.3L / 327 / V8
4.6L / 283 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1965 5.3L / 327 / V8
4.6L / 283 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1966 4.6L / 283 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1967 4.6L / 283 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1968 5.0L / 307 / V8
5.4L / 327 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1969 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1970 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1971 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1972 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1973 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1974 5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1975 5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1976 5.7L / 350 / V8
5.0L / 305 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1977 5.7L / 350 / V8
5.0L / 305 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1978 5.7L / 350 / V8
5.0L / 305 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1979 5.7L / 350 / V8
5.0L / 305 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1980 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1981 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1982 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1983 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1984 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1985 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1986 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet El Camino 1987 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Laguna 1973 5.7L / 350 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Laguna 1974 5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Laguna 1975 5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Laguna 1976 5.7L / 350 / V8
6.6L / 400 / V8
5.0L / 305 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1964 5.3L / 327 / V8
4.6L / 283 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1965 4.6L / 283 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1966 4.6L / 283 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1967 4.6L / 283 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1973 5.7L / 350 / V8
5.0L / 307 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1974 5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1975 5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1976 5.0L / 305 / V8
5.7L / 350 / V8
6.6L / 400 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1977 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1978 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1979 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1980 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1981 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1982 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Chevrolet Malibu 1983 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Oldsmobile Cutlass 1978 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Oldsmobile Cutlass 1979 5.0L / 305 / V8
5.7L / 350 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Oldsmobile Cutlass 1980 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac Grand Prix 1978 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac Grand Prix 1979 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac Grand Prix 1980 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac LeMans 1977 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac LeMans 1978 5.7L / 350 / V8
5.0L / 305 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac LeMans 1979 5.7L / 350 / V8
5.0L / 305 / V8		 Real-Sealâ„¢; Header Gasket; Square Port;
Pontiac LeMans 1980 5.0L / 305 / V8 Real-Sealâ„¢; Header Gasket; Square Port;

Specifications:

Collector Gaskets Included No
Emission Code 5
Engine Chevrolet Small Block Gen I
Gasket Line MLS
Material Aluminum
Part Type Exhaust Header Gasket
Port Shape Square
Port Size 1.45" x 1.48"
Product Type Header Gaskets
Proposition 65 www.P65Warnings.ca.gov
Thickness .125"
Type of Component Exhaust Gaskets

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FlowTech Header Gaskets, Aluminum-Layered, 262-400 Chevrolet Small Block Gen I 1955-91 99150AFLT:
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