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. GM Gen III/IV Small Block V8 LS Series MLS Head Gasket 3.910in. Bore.Comprised of mulitple embossed layers of stainless steel with the outer layers utilizing a viton rubber coating.Compressed operating thickness is .040in. Each Fits, Fitments 1997 Chevrolet Camaro Base 1997 Chevrolet Camaro RS 1997 Chevrolet Camaro Z28 1997 Chevrolet Corvette Base 1997 Pontiac Firebird Formula 1997 Pontiac Firebird Trans Am 1998 Chevrolet Camaro Base 1998 Chevrolet Camaro Z28 1998 Chevrolet Camaro Z28 SS 1998 Chevrolet Corvette Base 1998 Chevrolet Corvette Indianapolis 500 Pace Car 1998 Pontiac Firebird Formula 1998 Pontiac Firebird Trans Am 1999 Chevrolet Camaro Base 1999 Chevrolet Camaro Z28 1999 Chevrolet Camaro Z28 SS 1999 Chevrolet Corvette Base 1999 Chevrolet Silverado 1500 Base 1999 Chevrolet Silverado 1500 LS 1999 Chevrolet Silverado 1500 LT 1999 Chevrolet Silverado 2500 Base 1999 Chevrolet Silverado 2500 LS 1999 Chevrolet Silverado 2500 LT 1999 GMC Sierra 1500 SL 1999 GMC Sierra 1500 SLE 1999 GMC Sierra 1500 SLT 1999 GMC Sierra 2500 SL 1999 GMC Sierra 2500 SLE 1999 GMC Sierra 2500 SLT 1999 Pontiac Firebird Formula 1999 Pontiac Firebird Trans Am 2000 Chevrolet Camaro Base 2000 Chevrolet Camaro Z28 2000 Chevrolet Camaro Z28 SS 2000 Chevrolet Corvette Base 2000 Chevrolet Silverado 1500 Base 2000 Chevrolet Silverado 1500 LS 2000 Chevrolet Silverado 1500 LT 2000 Chevrolet Silverado 2500 Base 2000 Chevrolet Silverado 2500 LS 2000 Chevrolet Silverado 2500 LT 2000 Chevrolet Suburban 1500 Base 2000 Chevrolet Suburban 1500 LS 2000 Chevrolet Suburban 1500 LT 2000 Chevrolet Tahoe Base 2000 Chevrolet Tahoe LS 2000 Chevrolet Tahoe LT 2000 GMC Sierra 1500 SL 2000 GMC Sierra 1500 SLE 2000 GMC Sierra 1500 SLT 2000 GMC Sierra 2500 SL 2000 GMC Sierra 2500 SLE 2000 GMC Sierra 2500 SLT 2000 GMC Yukon SLE 2000 GMC Yukon SLT 2000 GMC Yukon XL 1500 SLE 2000 GMC Yukon XL 1500 SLT 2000 Pontiac Firebird Formula 2000 Pontiac Firebird Trans Am 2001 Avanti II Base 2001 Chevrolet Camaro Base 2001 Chevrolet Camaro Z28 2001 Chevrolet Camaro Z28 SS 2001 Chevrolet Corvette Base 2001 Chevrolet Corvette Z06 2001 Chevrolet Silverado 1500 Base 2001 Chevrolet Silverado 1500 LS 2001 Chevrolet Silverado 1500 LT 2001 Chevrolet 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SLE 2002 GMC Sierra 1500 SLT 2002 GMC Sierra 1500 WT 2002 GMC Yukon SLE 2002 GMC Yukon SLT 2002 GMC Yukon XL 1500 SLE 2002 GMC Yukon XL 1500 SLT 2002 Pontiac Firebird Formula 2002 Pontiac Firebird Trans Am 2003 Avanti II Base 2003 Chevrolet Avalanche 1500 Base 2003 Chevrolet Avalanche 1500 North Face 2003 Chevrolet Avalanche 1500 On Road Edition 2003 Chevrolet Avalanche 1500 WBH 2003 Chevrolet Avalanche 1500 Z71 2003 Chevrolet Corvette 50th Anniversary Edition 2003 Chevrolet Corvette 50th Anniversary Edition Pace Car 2003 Chevrolet Corvette Base 2003 Chevrolet Corvette Z06 2003 Chevrolet Express 2500 Base 2003 Chevrolet Express 2500 LS 2003 Chevrolet Silverado 1500 Base 2003 Chevrolet Silverado 1500 LS 2003 Chevrolet Silverado 1500 LT 2003 Chevrolet Silverado 1500 WT 2003 Chevrolet SSR Base 2003 Chevrolet Suburban 1500 LS 2003 Chevrolet Suburban 1500 LT 2003 Chevrolet Tahoe LS 2003 Chevrolet Tahoe LT 2003 Chevrolet Tahoe Z71 2003 Chevrolet Trailblazer EXT LS 2003 Chevrolet Trailblazer EXT LT 2003 Chevrolet Trailblazer EXT North Face 2003 GMC Envoy XL SLE 2003 GMC Envoy XL SLT 2003 GMC Savana 1500 Base 2003 GMC Savana 1500 SLE 2003 GMC Savana 2500 Base 2003 GMC Savana 2500 SLE 2003 GMC Sierra 1500 Base 2003 GMC Sierra 1500 SL 2003 GMC Sierra 1500 SLE 2003 GMC Sierra 1500 SLT 2003 GMC Sierra 1500 WT 2003 GMC Yukon SLE 2003 GMC Yukon SLT 2003 GMC Yukon XL 1500 SLE 2003 GMC Yukon XL 1500 SLT 2004 Avanti II Base 2004 Cadillac CTS V 2004 Chevrolet Avalanche 1500 Base 2004 Chevrolet Avalanche 1500 Z66 2004 Chevrolet Avalanche 1500 Z71 2004 Chevrolet Corvette Base 2004 Chevrolet Corvette Z06 2004 Chevrolet Express 2500 Base 2004 Chevrolet Express 2500 LS 2004 Chevrolet Silverado 1500 Base 2004 Chevrolet Silverado 1500 Hybrid 2004 Chevrolet Silverado 1500 LS 2004 Chevrolet Silverado 1500 LT 2004 Chevrolet Silverado 1500 WT 2004 Chevrolet Silverado 1500 Z71 2004 Chevrolet SSR Base 2004 Chevrolet Suburban 1500 LS 2004 Chevrolet Suburban 1500 LT 2004 Chevrolet Suburban 1500 Z71 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SLE 2012 GMC Canyon SLT 2012 GMC Sierra 1500 SL 2012 GMC Sierra 1500 SLE 2012 GMC Sierra 1500 SLT 2012 GMC Sierra 1500 WT 2012 GMC Sierra 1500 XFE 2012 GMC Yukon SLE 2012 GMC Yukon SLT 2012 GMC Yukon XL 1500 SLE 2012 GMC Yukon XL 1500 SLT 2013 Chevrolet Avalanche Black Diamond LS 2013 Chevrolet Avalanche Black Diamond LT 2013 Chevrolet Avalanche Black Diamond LTZ 2013 Chevrolet Camaro SS 2013 Chevrolet Corvette Base 2013 Chevrolet Corvette Grand Sport 2013 Chevrolet Silverado 1500 LS 2013 Chevrolet Silverado 1500 LT 2013 Chevrolet Silverado 1500 LTZ 2013 Chevrolet Silverado 1500 WT 2013 Chevrolet Silverado 1500 XFE 2013 Chevrolet Suburban 1500 LS 2013 Chevrolet Suburban 1500 LT 2013 Chevrolet Suburban 1500 LTZ 2013 Chevrolet Tahoe LS 2013 Chevrolet Tahoe LT 2013 Chevrolet Tahoe LTZ 2013 GMC Sierra 1500 SL 2013 GMC Sierra 1500 SLE 2013 GMC Sierra 1500 SLT 2013 GMC Sierra 1500 WT 2013 GMC Sierra 1500 XFE 2013 GMC Yukon SLE 2013 GMC Yukon SLT 2013 GMC Yukon XL 1500 SLE 2013 GMC Yukon XL 1500 SLT 2014 Chevrolet Camaro SS 2014 Chevrolet SS Base 2015 Chevrolet Camaro SS 2015 Chevrolet SS Base 2016 Chevrolet SS Base 2017 Chevrolet SS Base