What is the compressed thickness of this gasket?

The compressed operating thickness of this Cometic MLS head gasket is 0.036 inches. This is achieved after the gasket is installed and torqued down to manufacturer specifications.

Does this gasket require any sealant for installation?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance without the need for additional sealants. The multi-layer steel construction and Viton coating ensure a reliable seal on their own.

What is Viton and why is it used on this gasket?

Viton is a type of synthetic rubber that is highly resistant to heat and harsh chemicals. It's used on the outer layers of this gasket to ensure a durable and effective seal, even in high-temperature engine environments.

Specifications

Brand: Cometic Gasket
Part #: C5271-051
UPC: 191070072513

Cometic Chevy Gen-1 Small Block V8 .051in MLS Cylinder Head Gasket - 4.125in Bore

Name: Cometic Chevy Gen-1 Small Block V8 .051in MLS Cylinder Head Gasket - 4.125in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-gen-1-small-block-v8-051in-mls-cylinder-head-gasket-t14-806165
Price: 102.25 USD
Availability: BackOrder

$102.25

On Backorder

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Cometic Gen-1 Small Block V8 MLS head gasket. Features a 4.125in bore and 0.051in thickness for improved sealing.

Key Features

Fits a wide range of Chevrolet, GMC, Buick, and Avanti vehicles from 1980-1986.
Multi-Layer Steel (MLS) construction offers increased strength and rebound resistance.
Outer layers are embossed and coated with heat-resistant Viton rubber.
Viton coating is rated for temperatures up to 250 C (482 F).
Compressed operating thickness is 0.036 inches.
Designed for 4.125 inch bore applications.

⚠️ 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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About this part

Product Details

This is a Cometic Multi-Layer Steel (MLS) cylinder head gasket designed for Chevy Gen-1 Small Block V8 engines. You get one MLS head gasket with a 4.125-inch bore and an overall thickness of 0.051 inches. This gasket is built with multiple layers of stainless steel, with the outer layers coated in Viton rubber for excellent heat resistance and sealing performance. It's designed to handle the demands of high-output engines and works well with both aluminum and cast iron blocks.

The multi-layer steel construction gives this gasket increased strength and the ability to rebound, helping it resist corrosion and maintain a strong seal. The Viton coating on the outer layers is a heat-resistant material rated up to 482 degrees Fahrenheit, making it suitable for harsh sealing environments and various surface finishes. The center layer is stainless steel and can be varied to achieve different thicknesses, with this particular gasket set to a compressed operating thickness of 0.036 inches.

This gasket fits a wide range of vehicles from the early 1980s, including many Chevrolet C/K series trucks, Camaro, Corvette, and Caprice models, as well as GMC trucks and some Buick and Avanti vehicles. It's a solid option for rebuilding or upgrading your engine's top end.