- Fasteners & Gaskets
- Gaskets
- Cylinder Head Gaskets
- Cometic Small Block Chevy Cylinder Head Gaskets
Cometic Multilayer Steel (MLS) Gaskets are designed to provide the best possible seal for naturally-aspirated, boosted, or nitrous-fed engines. The head gaskets are made from 3-5 layers of spring stainless steel, offering a stronger base material than standard cylinder head gaskets. The outer layers are Viton-coated stainless steel to create a superior seal not available with other steel or copper gaskets. The gaskets have excellent rebound characteristics and are made to resist corrosive substances. MLS head gaskets reduce bore distortion but still withstand extreme cylinder pressures. Sold individually.
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Features
- Made from Stainless Spring Steel to offer an extremely strong corrosion-resistant cylinder head gasket
- Each MLS head gasket is coated with a .001" thick Viton rubber that is bonded to the outer stainless steel layers
- Designed to withstand serious cylinder pressures without requiring machining for the installation of a locking wire Installation Notes
- Gaskets are not designed to be used on engines with O-rings or receiver grooves
- Always refer to the manufacturer of the fastener to determine accurate torque values
- A surface finish of 50 RA (roughness average) or finer is recommended for proper gasket seal
- Cometic Cylinder Head Gaskets go on dry because they're coated with a sealant (adding another sealer can hinder gasket performance)
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Chevrolet Small-Block
Cometic Gasket V-Twin Small-Block Chevy Head Gasket for Gen I V8 with 18/23-Degree Heads [0.023 in.]
Cometic Gasket V-Twin C5245-023
Cometic Gasket V-Twin Small-Block Chevy Head Gasket for Gen I V8 with 18/23-Degree Heads [0.023 in.]
Small-Block Chevy Head GasketGen I V8 3-Layer 18-Degree/23-Degree Heads Bore Shape: Round Bore: 4.060 in. Compressed Thickness: .023 in. Sold Individually
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$87.95
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Cometic Gasket V-Twin C5245-027
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .027" Sold Individually
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$87.95
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Cometic Gasket V-Twin C5245-030
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .030" Compressed Volume: 6.37cc Sold Individually
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$87.95
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Cometic Gasket V-Twin C5245-036
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .036" Sold Individually
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$87.95
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Cometic Gasket V-Twin C5245-040
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .040" Sold Individually
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$87.95
(1)
Ships on 07/29/25
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Cometic Gasket V-Twin C5245-045
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .045" Sold Individually
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$92.35
Ships on 07/24/25
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Cometic Gasket V-Twin C5245-051
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .051" Sold Individually
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$92.35
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Cometic Gasket V-Twin C5245-056
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .056" Sold Individually
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$121.04
Ships on 07/14/25
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Cometic Gasket V-Twin C5245-060
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .060" Sold Individually
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$121.04
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Cometic Gasket V-Twin C5245-062
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .062" Sold Individually
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$121.04
Ships on 07/14/25
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Cometic Gasket V-Twin C5245-066
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .066" Sold Individually
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$121.04
Ships on 07/14/25
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Cometic Gasket V-Twin C5245-070
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .070" Sold Individually
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$121.04
Ships on 07/14/25
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Cometic Gasket V-Twin C5245-075
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .075" Sold Individually
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$121.04
Ships on 07/14/25
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Cometic Gasket V-Twin C5245-080
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .080" Sold Individually
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$132.59
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Cometic Gasket V-Twin C5245-084
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .084" Sold Individually
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$132.59
Ships on 07/14/25
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Cometic Gasket V-Twin C5245-089
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .089" Sold Individually
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$132.59
Ships on 07/30/25
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Cometic Gasket V-Twin C5245-120
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.060" Compressed Thickness: .120" Sold Individually
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$235.73
Ships on 07/14/25
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Cometic Gasket V-Twin C5246-027
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .027" Sold Individually
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$87.95
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Cometic Gasket V-Twin C5246-030
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .030" Sold Individually
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$87.95
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Cometic Gasket V-Twin C5246-036
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .036" Sold Individually
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$87.95
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Cometic Gasket V-Twin C5246-040
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .040" Sold Individually
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$87.95
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Cometic Gasket V-Twin C5246-045
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .045" Sold Individually
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$92.35
Ships on 07/16/25
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Cometic Gasket V-Twin C5246-051
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .051" Sold Individually
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$92.35
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Cometic Gasket V-Twin C5246-060
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .060" Sold Individually
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$121.04
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Cometic Gasket V-Twin C5246-066
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .066" Sold Individually
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$121.04
Ships on 08/01/25
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Cometic Gasket V-Twin C5246-070
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .070" Sold Individually
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$121.04
Ships on 07/14/25
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Cometic Gasket V-Twin C5246-075
Cometic Gasket V-Twin Small-Block Chevy Head Gasket 265-400 18° & 23° Heads
Small-Block Chevy Head Gasket 265-400 18° & 23° Heads Bore: 4.100" Compressed Thickness: .075" Sold Individually
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$121.04
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