What is the compressed thickness of this head gasket?

When properly installed and compressed, this head gasket has an operating thickness of 0.098 inches. This is achieved through its multi-layer steel construction.

Does this gasket require any additional sealants?

No, this Cometic MLS head gasket is designed to provide maximum sealing performance on its own and does not require any additional sealants.

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

Viton is a heat-resistant rubber material used to coat the outer layers of the gasket. It's designed to meet the demands of harsh sealing environments and high temperatures, up to 482 degrees Fahrenheit.

Specifications

Brand: Cometic Gasket
Part #: C5764-056
UPC: 191070040345

Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .056in MLS Cylinder Head Gasket - 4.280in Bore - LHS

Name: Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .056in MLS Cylinder Head Gasket - 4.280in Bore - LHS
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-l18-vortec-8100-gen-vii-big-block-v8-056in-mls-cylinde-t14-803617
Price: 152.35 USD
Availability: BackOrder

$152.35

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Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 MLS head gasket. .056in thick, 4.280in bore. For high output engines.

Key Features

This product is a Cometic Multi-Layer Steel (MLS) head gasket for GM L18 Vortec 8100 Gen-VII Big Block V8 engines.
It features a 4.280 inch bore size and a thickness of 0.056 inches.
The gasket is constructed from multiple layers of stainless steel for increased strength and corrosion resistance.
Outer layers are coated with Viton, a heat-resistant rubber material rated up to 482 degrees Fahrenheit.
It is designed for high-output engines and requires no additional sealants.
This gasket is suitable for use with both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks.

⚠️ 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 Cometic Multi-Layer Steel (MLS) head gasket is what you get when you need a solid seal for your GM L18 Vortec 8100 Gen-VII Big Block V8 engine. It's designed to handle the demands of high-output applications, ensuring a reliable seal between your cylinder head and engine block without needing extra sealants.

Comprised of multiple stainless steel layers, this gasket offers increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit, making it suitable for both aluminum-to-aluminum and aluminum-to-cast iron head and block combinations. The center shim layer is stainless steel and can be varied to achieve different thicknesses, with this specific gasket having a compressed operating thickness of 0.098 inches and a bore size of 4.280 inches.

This gasket fits a range of heavy-duty GM trucks and SUVs, including models like the Chevrolet Silverado 2500 HD and GMC Yukon XL 2500. It's a well-built component designed for durability and performance in demanding engine builds.