What is the bore size and thickness of this gasket?

This Cometic head gasket is designed for engines with a 4.165 inch bore. The gasket itself is 0.030 inches thick, which is a common size for many rebuilds and performance applications.

What does the Viton coating on the outer layers do?

The Viton coating on the embossed outer layers of this MLS gasket helps to create a more robust and reliable seal. Viton is known for its resistance to heat and fluids, which is important for maintaining sealing integrity under engine operating conditions.

Does this gasket come with any hardware?

This product is for the cylinder head gasket only. It does not include head bolts or other installation hardware, which should be purchased separately if needed.

Specifications

Brand: Cometic Gasket
Part #: C5272-030
UPC: 191070026462

Cometic Chevrolet Gen-1 Small Block V8 4.165in Bore .030in MLS Cylinder Head Gasket

Name: Cometic Chevrolet Gen-1 Small Block V8 4.165in Bore .030in MLS Cylinder Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-gen-1-small-block-v8-4-165in-bore-030in-mls-cyl-t14-523707
Price: 97.74 USD
Availability: BackOrder

$97.74

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Cometic MLS head gasket for GM Gen 1 Small Block V8 engines. Features 4.165in bore and .030in thickness.

Key Features

Fits GM Gen 1 Small Block V8 engines with 18/23 degree heads.
Features a 4.165 inch bore size.
Gasket thickness is 0.030 inches.
Multi-Layer Steel (MLS) construction for durability.
Embossed outer layers are coated with Viton for a strong seal.
Includes valve pocketed bore and steam holes.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will it fit your car?

About this part

Product Details

If you're rebuilding the top end of your Chevrolet Gen-1 Small Block V8, getting the right cylinder head gasket is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built for engines with a 4.165-inch bore and is precisely 0.030 inches thick, making it a good choice for many performance builds or restorations.

MLS gaskets are known for their ability to handle higher compression and temperature changes compared to traditional composite gaskets. The embossed outer layers are coated with Viton, a material that helps create a reliable seal even under demanding conditions. This gasket also features valve pocketed bores and steam holes, which are important considerations for the specific head design on these popular V8s.

This gasket fits a wide range of GM Gen 1 Small Block engines with 18/23 degree cylinder heads, including many Chevrolet and GMC trucks, as well as classic muscle cars like the Camaro and Corvette. Always double-check your specific engine's bore size and head angle to ensure this gasket is the correct fit for your project.