What is the main advantage of a Multi-Layer Steel (MLS) head gasket?

MLS head gaskets are constructed from multiple layers of stainless steel, which provides superior strength and resistance to corrosion compared to traditional gaskets. This construction allows them to handle higher pressures and temperatures, making them ideal for high-output engines.

Does this Cometic head gasket require any sealant during installation?

No, this Cometic MLS head gasket is designed to provide a complete seal on its own and does not require any additional sealants. The Viton coating on the outer layers ensures a tight fit against the head and block surfaces.

What is the role of the Viton coating on the outer layers?

The Viton coating on the outer layers of the gasket is a heat-resistant rubber material. It helps to create a robust seal against the engine block and cylinder head, capable of withstanding high temperatures up to 482°F (250°C) and various sealing environments.

Specifications

Brand: Cometic Gasket
Part #: C5764-066
UPC: 191070139612

Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .066in MLS Cylinder Head Gasket - 4.280in Bore - LHS

Name: Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .066in MLS Cylinder Head Gasket - 4.280in Bore - LHS
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-l18-vortec-8100-gen-vii-big-block-v8-066in-mls-cylinde-t14-803618
Price: 152.35 USD
Availability: BackOrder

$152.35

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Cometic MLS head gasket for GM L18 Vortec 8100 Big Block V8. Features Viton coating for excellent sealing.

Key Features

Fits 2001-2007 Chevrolet and GMC trucks and SUVs with the GM L18 Vortec 8100 Gen-VII Big Block V8 engine.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with Viton, a heat-resistant elastomer that seals effectively up to 482°F (250°C).
Designed for both aluminum-to-aluminum and aluminum-to-cast iron head and block combinations.
Features a 4.280-inch bore size.
Compressed operating thickness is 0.066 inches.

⚠️ 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

Cometic Gasket is known for making well-built sealing components, and this Multi-Layer Steel (MLS) head gasket is a prime example. It's designed specifically for the GM L18 Vortec 8100 Gen-VII Big Block V8 engine, offering a 4.280-inch bore and a compressed thickness of 0.066 inches. This gasket fits a range of popular trucks and SUVs like the Chevrolet Silverado 2500 HD and GMC Sierra 3500, ensuring a solid seal for your engine rebuild.

What makes this gasket stand out is its construction. It uses multiple layers of stainless steel for strength and corrosion resistance, which helps it handle the forces between aluminum and cast iron blocks. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F (250°C), providing a reliable seal even in demanding conditions. The center layer is uncoated stainless steel and can be varied to achieve different thicknesses, like the 0.066 inches on this particular gasket. Because it's an MLS design, it doesn't require any additional sealants, making installation more straightforward.