What makes an MLS head gasket different from a standard gasket?

Multi-Layer Steel (MLS) head gaskets use multiple layers of stainless steel for superior strength and sealing compared to older composite designs. They are also more resistant to corrosion and can handle higher temperatures and pressures without degrading.

Does this gasket require any special sealants during installation?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance on their own and do not require any additional sealants. This helps ensure a clean and reliable installation.

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

Viton is a type of synthetic rubber that is highly resistant to heat, chemicals, and harsh sealing environments. Coating the outer layers of the gasket with Viton helps it maintain a strong seal against the cylinder head and block, even under extreme operating temperatures.

Specifications

Brand: Cometic Gasket
Part #: C5761-066
UPC: 191070139469

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

Name: Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .066in MLS Cylinder Head Gasket - 4.280in Bore - RHS
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-l18-vortec-8100-gen-vii-big-block-v8-066in-mls-cylinde-t14-803600
Price: 152.35 USD
Availability: BackOrder

$152.35

On Backorder

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

Cometic is known for well-built gaskets. This MLS head gasket for GM L18 Vortec 8100 Big Block V8 engines offers reliable sealing for high-output applications.

Key Features

Fits Chevrolet and GMC trucks and SUVs with GM L18 Vortec 8100 Gen-VII Big Block V8 engines from 2001-2007.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with Viton, a heat-resistant elastomer rated up to 482°F (250°C).
Designed to seal effectively between aluminum heads and aluminum or cast iron blocks.
Compressed gasket thickness is .066 inches.
Bore size is 4.280 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

Secure CheckoutFast Shipping631-982-0042

Will it fit your car?

About this part

Product Details

Cometic Gasket is well-known for making solid sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It's built for GM L18 Vortec 8100 Gen-VII Big Block V8 engines, designed to handle the demands of these powerful motors. This gasket is a direct replacement, fitting a range of trucks and SUVs like the Chevrolet Silverado 2500 HD, GMC Sierra 3500, and Chevrolet Suburban 2500.

This gasket uses multiple layers of stainless steel for 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°F (250°C) and works well with different head and block materials, including aluminum to cast iron. The center layer is uncoated stainless steel and can be varied to achieve different thicknesses, like the .066 inch compressed thickness on this particular gasket, which is important for maintaining proper compression ratios. Because it's an MLS design, it seals exceptionally well without needing any additional sealants.