# Cometic GM / Mercury 8.1L 496ci 110.49mm .040 inch MLS LHS Head Gasket Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.040". Left Side. Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements. - The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes - The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements - Requires less clamp load creating less bore distortion - Conforms load distribution across the sealing area - Embossed Outer Layers Coated w/Viton This Part Fits: Year Make Model Submodel 2002-2004 Chevrolet Avalanche 2500 Base 2005-2006 Chevrolet Avalanche 2500 LS 2005-2006 Chevrolet Avalanche 2500 LT 2001-2002 Chevrolet Express 3500 Base 2001-2002 Chevrolet Express 3500 LS 2001-2005 Chevrolet Silverado 2500 HD Base 2001-2006 Chevrolet Silverado 2500 HD LS 2001-2006 Chevrolet Silverado 2500 HD LT 2004-2006 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS 2001-2006 Chevrolet Silverado 3500 LT 2004,2006 Chevrolet Silverado 3500 WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2001 Chevrolet Suburban 2500 Base 2001-2006 Chevrolet Suburban 2500 LS 2001-2006 Chevrolet Suburban 2500 LT 2001-2002 GMC Savana 3500 Base 2001-2002 GMC Savana 3500 SLT 2002-2005 GMC Sierra 2500 HD Base 2001-2002,2006 GMC Sierra 2500 HD SL 2001-2006 GMC Sierra 2500 HD SLE 2001-2006 GMC Sierra 2500 HD SLT 2003-2006 GMC Sierra 2500 HD WT 2007 GMC Sierra 2500 HD Classic SL 2007 GMC Sierra 2500 HD Classic SLE 2007 GMC Sierra 2500 HD Classic SLT 2007 GMC Sierra 2500 HD Classic WT 2002-2005 GMC Sierra 3500 Base 2001-2002,2006 GMC Sierra 3500 SL 2001-2006 GMC Sierra 3500 SLE 2001-2006 GMC Sierra 3500 SLT 2004-2006 GMC Sierra 3500 WT 2007 GMC Sierra 3500 Classic SL 2007 GMC Sierra 3500 Classic SLE 2007 GMC Sierra 3500 Classic SLT 2007 GMC Sierra 3500 Classic WT 2001-2006 GMC Yukon XL 2500 SLE 2001-2006 GMC Yukon XL 2500 SLT ## Details - **Price:** 159.26 CAD - **Vendor:** Cometic Gasket - **Type:** Head Gaskets ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 159.26 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - Primary - Photo - Primary - Photo - Primary - Photo - Primary - User 9 - Installation Instructions - Logo Image --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/cometic-gm-mercury-8-1l-496ci-110-49mm-040-inch-mls-lhs-head-gasket) > Updated: 2026-06-26