Cometic GM LS1 SB 3.910 inch Bore .040 inch MLS Headgasket

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.040". 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.
User 1
Installation Instructions
Warranty
Certificate of Origin
Installation Instructions


This Part Fits:

Year	Make	Model	Submodel
2001-2004	Avanti	II	Base
2004-2007	Cadillac	CTS	V
2013	Chevrolet	Avalanche	Black Diamond LS
2013	Chevrolet	Avalanche	Black Diamond LT
2013	Chevrolet	Avalanche	Black Diamond LTZ
2007-2012	Chevrolet	Avalanche	LS
2007-2012	Chevrolet	Avalanche	LT
2007-2012	Chevrolet	Avalanche	LTZ
2002-2005	Chevrolet	Avalanche 1500	Base
2005-2006	Chevrolet	Avalanche 1500	LS
2005-2006	Chevrolet	Avalanche 1500	LT
2003	Chevrolet	Avalanche 1500	North Face
2002-2003	Chevrolet	Avalanche 1500	On Road Edition
2003	Chevrolet	Avalanche 1500	WBH
2004-2006	Chevrolet	Avalanche 1500	Z66
2002-2006	Chevrolet	Avalanche 1500	Z71
1997-2002	Chevrolet	Camaro	Base
1997	Chevrolet	Camaro	RS
2010-2015	Chevrolet	Camaro	SS
1997-2002	Chevrolet	Camaro	Z28
1998-2002	Chevrolet	Camaro	Z28 SS
2009-2012	Chevrolet	Colorado	LT
2003	Chevrolet	Corvette	50th Anniversary Edition
2003	Chevrolet	Corvette	50th Anniversary Edition Pace Car
1997-2013	Chevrolet	Corvette	Base
2010-2013	Chevrolet	Corvette	Grand Sport
1998	Chevrolet	Corvette	Indianapolis 500 Pace Car
2001-2004	Chevrolet	Corvette	Z06
2003-2007	Chevrolet	Express 2500	Base
2003-2005	Chevrolet	Express 2500	LS
2005-2007	Chevrolet	Express 3500	Base
2005	Chevrolet	Express 3500	LS
1999-2005	Chevrolet	Silverado 1500	Base
2004-2006	Chevrolet	Silverado 1500	Hybrid
1999-2006,2008-2013	Chevrolet	Silverado 1500	LS
1999-2013	Chevrolet	Silverado 1500	LT
2007-2013	Chevrolet	Silverado 1500	LTZ
2002-2004,2006-2013	Chevrolet	Silverado 1500	WT
2010-2013	Chevrolet	Silverado 1500	XFE
2004	Chevrolet	Silverado 1500	Z71
2007	Chevrolet	Silverado 1500 Classic	Hybrid
2007	Chevrolet	Silverado 1500 Classic	LS
2007	Chevrolet	Silverado 1500 Classic	LT
2007	Chevrolet	Silverado 1500 Classic	WT
1999-2000	Chevrolet	Silverado 2500	Base
1999-2000	Chevrolet	Silverado 2500	LS
1999-2000	Chevrolet	Silverado 2500	LT
2014-2017	Chevrolet	SS	Base
2003-2006	Chevrolet	SSR	Base
2000-2001,2006	Chevrolet	Suburban 1500	Base
2000-2013	Chevrolet	Suburban 1500	LS
2000-2013	Chevrolet	Suburban 1500	LT
2007-2013	Chevrolet	Suburban 1500	LTZ
2004-2007	Chevrolet	Suburban 1500	Z71
2000-2001,2006	Chevrolet	Tahoe	Base
2000-2013	Chevrolet	Tahoe	LS
2000-2013	Chevrolet	Tahoe	LT
2007-2013	Chevrolet	Tahoe	LTZ
2003-2006	Chevrolet	Tahoe	Z71
2008	Chevrolet	Trailblazer	Base
2006-2007	Chevrolet	Trailblazer	LS
2006-2008	Chevrolet	Trailblazer	LT
2006-2009	Chevrolet	Trailblazer	SS
2003-2006	Chevrolet	Trailblazer EXT	LS
2003-2006	Chevrolet	Trailblazer EXT	LT
2003-2004	Chevrolet	Trailblazer EXT	North Face
2010-2012	GMC	Canyon	SLE
2009-2012	GMC	Canyon	SLT
2005-2009	GMC	Envoy	Denali
2005-2006	GMC	Envoy XL	Denali
2003-2005	GMC	Envoy XL	SLE
2003-2005	GMC	Envoy XL	SLT
2004-2005	GMC	Envoy XUV	SLE
2004-2005	GMC	Envoy XUV	SLT
2003-2007	GMC	Savana 1500	Base
2006-2007	GMC	Savana 1500	LS
2006-2007	GMC	Savana 1500	LT
2003-2005	GMC	Savana 1500	SLE
2003-2007	GMC	Savana 2500	Base
2003-2005	GMC	Savana 2500	SLE
2004-2007	GMC	Savana 3500	Base
2005	GMC	Savana 3500	SLE
2002-2005	GMC	Sierra 1500	Base
2002	GMC	Sierra 1500	HT
2005-2006	GMC	Sierra 1500	Hybrid
1999-2003,2006,2008-2013	GMC	Sierra 1500	SL
1999-2013	GMC	Sierra 1500	SLE
1999-2013	GMC	Sierra 1500	SLT
2002-2013	GMC	Sierra 1500	WT
2010-2013	GMC	Sierra 1500	XFE
2007	GMC	Sierra 1500 Classic	Hybrid
2007	GMC	Sierra 1500 Classic	SL
2007	GMC	Sierra 1500 Classic	SLE
2007	GMC	Sierra 1500 Classic	SLT
2007	GMC	Sierra 1500 Classic	WT
1999-2000	GMC	Sierra 2500	SL
1999-2000	GMC	Sierra 2500	SLE
1999-2000	GMC	Sierra 2500	SLT
2006	GMC	Yukon	SL
2000-2013	GMC	Yukon	SLE
2000-2013	GMC	Yukon	SLT
2006	GMC	Yukon XL 1500	SL
2000-2013	GMC	Yukon XL 1500	SLE
2000-2013	GMC	Yukon XL 1500	SLT
1997-2002	Pontiac	Firebird	Formula
1997-2002	Pontiac	Firebird	Trans Am
2009	Pontiac	G8	GXP
2004-2006	Pontiac	GTO	Base