Cometic GM LS1 SB 3.970 inch Bore .051 inch MLS Headgasket

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.051″. 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 3.970in. Bore.Comprised of mulitple embossed layers of stainless steel with the outer layers utilizing a viton rubber coating.Compressed operating thickness is .051in. Each

Fits
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 Suburban 1500 Base
2001 Chevrolet Suburban 1500 LS
2001 Chevrolet Suburban 1500 LT
2001 Chevrolet Tahoe Base
2001 Chevrolet Tahoe LS
2001 Chevrolet Tahoe LT
2001 GMC Sierra 1500 SL
2001 GMC Sierra 1500 SLE
2001 GMC Sierra 1500 SLT
2001 GMC Yukon SLE
2001 GMC Yukon SLT
2001 GMC Yukon XL 1500 SLE
2001 GMC Yukon XL 1500 SLT
2001 Pontiac Firebird Formula
2001 Pontiac Firebird Trans Am
2002 Avanti II Base
2002 Chevrolet Avalanche 1500 Base
2002 Chevrolet Avalanche 1500 On Road Edition
2002 Chevrolet Avalanche 1500 Z71
2002 Chevrolet Camaro Base
2002 Chevrolet Camaro Z28
2002 Chevrolet Camaro Z28 SS
2002 Chevrolet Corvette Base
2002 Chevrolet Corvette Z06
2002 Chevrolet Silverado 1500 Base
2002 Chevrolet Silverado 1500 LS
2002 Chevrolet Silverado 1500 LT
2002 Chevrolet Silverado 1500 WT
2002 Chevrolet Suburban 1500 LS
2002 Chevrolet Suburban 1500 LT
2002 Chevrolet Tahoe LS
2002 Chevrolet Tahoe LT
2002 GMC Sierra 1500 Base
2002 GMC Sierra 1500 HT
2002 GMC Sierra 1500 SL
2002 GMC Sierra 1500 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
2004 Chevrolet Tahoe LS
2004 Chevrolet Tahoe LT
2004 Chevrolet Tahoe Z71
2004 Chevrolet Trailblazer EXT LS
2004 Chevrolet Trailblazer EXT LT
2004 Chevrolet Trailblazer EXT North Face
2004 GMC Envoy XL SLE
2004 GMC Envoy XL SLT
2004 GMC Envoy XUV SLE
2004 GMC Envoy XUV SLT
2004 GMC Savana 1500 Base
2004 GMC Savana 1500 SLE
2004 GMC Savana 2500 Base
2004 GMC Savana 2500 SLE
2004 GMC Savana 3500 Base
2004 GMC Sierra 1500 Base
2004 GMC Sierra 1500 SLE
2004 GMC Sierra 1500 SLT
2004 GMC Sierra 1500 WT
2004 GMC Yukon SLE
2004 GMC Yukon SLT
2004 GMC Yukon XL 1500 SLE
2004 GMC Yukon XL 1500 SLT
2004 Pontiac GTO Base
2005 Cadillac CTS V
2005 Chevrolet Avalanche 1500 Base
2005 Chevrolet Avalanche 1500 LS
2005 Chevrolet Avalanche 1500 LT
2005 Chevrolet Avalanche 1500 Z66
2005 Chevrolet Avalanche 1500 Z71
2005 Chevrolet Corvette Base
2005 Chevrolet Express 2500 Base
2005 Chevrolet Express 2500 LS
2005 Chevrolet Express 3500 Base
2005 Chevrolet Express 3500 LS
2005 Chevrolet Silverado 1500 Base
2005 Chevrolet Silverado 1500 Hybrid
2005 Chevrolet Silverado 1500 LS
2005 Chevrolet Silverado 1500 LT
2005 Chevrolet SSR Base
2005 Chevrolet Suburban 1500 LS
2005 Chevrolet Suburban 1500 LT
2005 Chevrolet Suburban 1500 Z71
2005 Chevrolet Tahoe LS
2005 Chevrolet Tahoe LT
2005 Chevrolet Tahoe Z71
2005 Chevrolet Trailblazer EXT LS
2005 Chevrolet Trailblazer EXT LT
2005 GMC Envoy Denali
2005 GMC Envoy XL Denali
2005 GMC Envoy XL SLE
2005 GMC Envoy XL SLT
2005 GMC Envoy XUV SLE
2005 GMC Envoy XUV SLT
2005 GMC Savana 1500 Base
2005 GMC Savana 1500 SLE
2005 GMC Savana 2500 Base
2005 GMC Savana 2500 SLE
2005 GMC Savana 3500 Base
2005 GMC Savana 3500 SLE
2005 GMC Sierra 1500 Base
2005 GMC Sierra 1500 Hybrid
2005 GMC Sierra 1500 SLE
2005 GMC Sierra 1500 SLT
2005 GMC Sierra 1500 WT
2005 GMC Yukon SLE
2005 GMC Yukon SLT
2005 GMC Yukon XL 1500 SLE
2005 GMC Yukon XL 1500 SLT
2005 Pontiac GTO Base
2006 Cadillac CTS V
2006 Chevrolet Avalanche 1500 LS
2006 Chevrolet Avalanche 1500 LT
2006 Chevrolet Avalanche 1500 Z66
2006 Chevrolet Avalanche 1500 Z71
2006 Chevrolet Corvette Base
2006 Chevrolet Express 2500 Base
2006 Chevrolet Express 3500 Base
2006 Chevrolet Silverado 1500 Hybrid
2006 Chevrolet Silverado 1500 LS
2006 Chevrolet Silverado 1500 LT
2006 Chevrolet Silverado 1500 WT
2006 Chevrolet SSR Base
2006 Chevrolet Suburban 1500 Base
2006 Chevrolet Suburban 1500 LS
2006 Chevrolet Suburban 1500 LT
2006 Chevrolet Suburban 1500 Z71
2006 Chevrolet Tahoe Base
2006 Chevrolet Tahoe LS
2006 Chevrolet Tahoe LT
2006 Chevrolet Tahoe Z71
2006 Chevrolet Trailblazer LS
2006 Chevrolet Trailblazer LT
2006 Chevrolet Trailblazer SS
2006 Chevrolet Trailblazer EXT LS
2006 Chevrolet Trailblazer EXT LT
2006 GMC Envoy Denali
2006 GMC Envoy XL Denali
2006 GMC Savana 1500 Base
2006 GMC Savana 1500 LS
2006 GMC Savana 1500 LT
2006 GMC Savana 2500 Base
2006 GMC Savana 3500 Base
2006 GMC Sierra 1500 Hybrid
2006 GMC Sierra 1500 SL
2006 GMC Sierra 1500 SLE
2006 GMC Sierra 1500 SLT
2006 GMC Sierra 1500 WT
2006 GMC Yukon SL
2006 GMC Yukon SLE
2006 GMC Yukon SLT
2006 GMC Yukon XL 1500 SL
2006 GMC Yukon XL 1500 SLE
2006 GMC Yukon XL 1500 SLT
2006 Pontiac GTO Base
2007 Cadillac CTS V
2007 Chevrolet Avalanche LS
2007 Chevrolet Avalanche LT
2007 Chevrolet Avalanche LTZ
2007 Chevrolet Corvette Base
2007 Chevrolet Express 2500 Base
2007 Chevrolet Express 3500 Base
2007 Chevrolet Silverado 1500 LT
2007 Chevrolet Silverado 1500 LTZ
2007 Chevrolet Silverado 1500 WT
2007 Chevrolet Silverado 1500 Classic Hybrid
2007 Chevrolet Silverado 1500 Classic LS
2007 Chevrolet Silverado 1500 Classic LT
2007 Chevrolet Silverado 1500 Classic WT
2007 Chevrolet Suburban 1500 LS
2007 Chevrolet Suburban 1500 LT
2007 Chevrolet Suburban 1500 LTZ
2007 Chevrolet Suburban 1500 Z71
2007 Chevrolet Tahoe LS
2007 Chevrolet Tahoe LT
2007 Chevrolet Tahoe LTZ
2007 Chevrolet Trailblazer LS
2007 Chevrolet Trailblazer LT
2007 Chevrolet Trailblazer SS
2007 GMC Envoy Denali
2007 GMC Savana 1500 Base
2007 GMC Savana 1500 LS
2007 GMC Savana 1500 LT
2007 GMC Savana 2500 Base
2007 GMC Savana 3500 Base
2007 GMC Sierra 1500 SLE
2007 GMC Sierra 1500 SLT
2007 GMC Sierra 1500 WT
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
2007 GMC Yukon SLE
2007 GMC Yukon SLT
2007 GMC Yukon XL 1500 SLE
2007 GMC Yukon XL 1500 SLT
2008 Chevrolet Avalanche LS
2008 Chevrolet Avalanche LT
2008 Chevrolet Avalanche LTZ
2008 Chevrolet Corvette Base
2008 Chevrolet Silverado 1500 LS
2008 Chevrolet Silverado 1500 LT
2008 Chevrolet Silverado 1500 LTZ
2008 Chevrolet Silverado 1500 WT
2008 Chevrolet Suburban 1500 LS
2008 Chevrolet Suburban 1500 LT
2008 Chevrolet Suburban 1500 LTZ
2008 Chevrolet Tahoe LS
2008 Chevrolet Tahoe LT
2008 Chevrolet Tahoe LTZ
2008 Chevrolet Trailblazer Base
2008 Chevrolet Trailblazer LT
2008 Chevrolet Trailblazer SS
2008 GMC Envoy Denali
2008 GMC Sierra 1500 SL
2008 GMC Sierra 1500 SLE
2008 GMC Sierra 1500 SLT
2008 GMC Sierra 1500 WT
2008 GMC Yukon SLE
2008 GMC Yukon SLT
2008 GMC Yukon XL 1500 SLE
2008 GMC Yukon XL 1500 SLT
2009 Chevrolet Avalanche LS
2009 Chevrolet Avalanche LT
2009 Chevrolet Avalanche LTZ
2009 Chevrolet Colorado LT
2009 Chevrolet Corvette Base
2009 Chevrolet Silverado 1500 LS
2009 Chevrolet Silverado 1500 LT
2009 Chevrolet Silverado 1500 LTZ
2009 Chevrolet Silverado 1500 WT
2009 Chevrolet Suburban 1500 LS
2009 Chevrolet Suburban 1500 LT
2009 Chevrolet Suburban 1500 LTZ
2009 Chevrolet Tahoe LS
2009 Chevrolet Tahoe LT
2009 Chevrolet Tahoe LTZ
2009 Chevrolet Trailblazer SS
2009 GMC Canyon SLT
2009 GMC Envoy Denali
2009 GMC Sierra 1500 SL
2009 GMC Sierra 1500 SLE
2009 GMC Sierra 1500 SLT
2009 GMC Sierra 1500 WT
2009 GMC Yukon SLE
2009 GMC Yukon SLT
2009 GMC Yukon XL 1500 SLE
2009 GMC Yukon XL 1500 SLT
2009 Pontiac G8 GXP
2010 Chevrolet Avalanche LS
2010 Chevrolet Avalanche LT
2010 Chevrolet Avalanche LTZ
2010 Chevrolet Camaro SS
2010 Chevrolet Colorado LT
2010 Chevrolet Corvette Base
2010 Chevrolet Corvette Grand Sport
2010 Chevrolet Silverado 1500 LS
2010 Chevrolet Silverado 1500 LT
2010 Chevrolet Silverado 1500 LTZ
2010 Chevrolet Silverado 1500 WT
2010 Chevrolet Silverado 1500 XFE
2010 Chevrolet Suburban 1500 LS
2010 Chevrolet Suburban 1500 LT
2010 Chevrolet Suburban 1500 LTZ
2010 Chevrolet Tahoe LS
2010 Chevrolet Tahoe LT
2010 Chevrolet Tahoe LTZ
2010 GMC Canyon SLE
2010 GMC Canyon SLT
2010 GMC Sierra 1500 SL
2010 GMC Sierra 1500 SLE
2010 GMC Sierra 1500 SLT
2010 GMC Sierra 1500 WT
2010 GMC Sierra 1500 XFE
2010 GMC Yukon SLE
2010 GMC Yukon SLT
2010 GMC Yukon XL 1500 SLE
2010 GMC Yukon XL 1500 SLT
2011 Chevrolet Avalanche LS
2011 Chevrolet Avalanche LT
2011 Chevrolet Avalanche LTZ
2011 Chevrolet Camaro SS
2011 Chevrolet Colorado LT
2011 Chevrolet Corvette Base
2011 Chevrolet Corvette Grand Sport
2011 Chevrolet Silverado 1500 LS
2011 Chevrolet Silverado 1500 LT
2011 Chevrolet Silverado 1500 LTZ
2011 Chevrolet Silverado 1500 WT
2011 Chevrolet Silverado 1500 XFE
2011 Chevrolet Suburban 1500 LS
2011 Chevrolet Suburban 1500 LT
2011 Chevrolet Suburban 1500 LTZ
2011 Chevrolet Tahoe LS
2011 Chevrolet Tahoe LT
2011 Chevrolet Tahoe LTZ
2011 GMC Canyon SLE
2011 GMC Canyon SLT
2011 GMC Sierra 1500 SL
2011 GMC Sierra 1500 SLE
2011 GMC Sierra 1500 SLT
2011 GMC Sierra 1500 WT
2011 GMC Sierra 1500 XFE
2011 GMC Yukon SLE
2011 GMC Yukon SLT
2011 GMC Yukon XL 1500 SLE
2011 GMC Yukon XL 1500 SLT
2012 Chevrolet Avalanche LS
2012 Chevrolet Avalanche LT
2012 Chevrolet Avalanche LTZ
2012 Chevrolet Camaro SS
2012 Chevrolet Colorado LT
2012 Chevrolet Corvette Base
2012 Chevrolet Corvette Grand Sport
2012 Chevrolet Silverado 1500 LS
2012 Chevrolet Silverado 1500 LT
2012 Chevrolet Silverado 1500 LTZ
2012 Chevrolet Silverado 1500 WT
2012 Chevrolet Silverado 1500 XFE
2012 Chevrolet Suburban 1500 LS
2012 Chevrolet Suburban 1500 LT
2012 Chevrolet Suburban 1500 LTZ
2012 Chevrolet Tahoe LS
2012 Chevrolet Tahoe LT
2012 Chevrolet Tahoe LTZ
2012 GMC Canyon 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