Cometic MLS Head Gasket — Fits GM LS1/LS2/LS3/LS6 4.080in Bore .040in

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Watch in action

Superior Sealing with Cometic MLS Head Gaskets

Achieve a reliable and robust seal for your GM LS-series engine with the Cometic Multi-Layer Steel (MLS) Head Gasket. Engineered for Gen-III and Gen-IV small block V8 engines, this gasket features a 4.080-inch bore and a .040-inch thickness, making it ideal for high-performance applications. Cometic's advanced HP shim technology is integrated into the design, significantly increasing the clampload around the combustion chamber. This innovative feature ensures superior sealability, even in open-deck block configurations, providing the durability and performance your engine demands.

Engineered for Performance and Durability

Cometic Gasket is a trusted name in engine sealing, and their MLS head gaskets are built to withstand the rigors of demanding engine builds. The multi-layer steel construction offers exceptional strength and resilience, resisting blowout and ensuring long-term performance. This gasket is designed to provide a precise fit and optimal compression for your LS1, LS2, LS3, or LS6 engine, contributing to overall engine health and power output. Whether you're building a street machine, a track car, or a heavy-duty workhorse, Cometic MLS head gaskets deliver the confidence you need.

  • Engine Fitment: Designed for GM LS1, LS2, LS3, and LS6 Gen-III/IV Small Block V8 engines.
  • Bore Size: 4.080 inches.
  • Thickness: .040 inches.
  • Construction: Multi-Layer Steel (MLS) for maximum durability and sealing.
  • Advanced Sealing: Features HP shim technology for increased clampload and superior sealability.
  • Engine Compatibility: Suitable for a wide range of GM vehicles utilizing LS-series engines.
  • Reliable Performance: Ensures a strong seal under high-performance conditions.

Ensure the integrity of your GM LS engine build with Cometic MLS Head Gaskets. Experience the peace of mind that comes with top-tier sealing technology. Find the best engine components at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2009 Buick LaCrosse Super
2004-2005 Buick Rainier CXL Plus
2004-2007 Buick Rainier CXL
2004-2007 Cadillac CTS V
2002-2005 Cadillac Escalade Base
2003-2005 Cadillac Escalade ESV Base
2002-2005 Cadillac Escalade EXT Base
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2007-2012 Chevrolet Avalanche LTZ
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2002-2005 Chevrolet Avalanche 1500 Base
2002-2006 Chevrolet Avalanche 1500 Z71
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
1998-2002 Chevrolet Camaro Z28
1998-2002 Chevrolet Camaro Z28 SS
2010-2015 Chevrolet Camaro SS
2011-2017 Chevrolet Caprice PPV
2009-2012 Chevrolet Colorado LT
1997-2013 Chevrolet Corvette Base
1998 Chevrolet Corvette Indianapolis 500 Pace Car
2001-2004 Chevrolet Corvette Z06
2003 Chevrolet Corvette 50th Anniversary Edition
2003 Chevrolet Corvette 50th Anniversary Edition Pace Car
2010-2013 Chevrolet Corvette Grand Sport
2003-2009 Chevrolet Express 1500 Base
2003-2009 Chevrolet Express 1500 LS
2006-2009 Chevrolet Express 1500 LT
2003-2020 Chevrolet Express 2500 Base
2003-2020 Chevrolet Express 2500 LS
2006-2020 Chevrolet Express 2500 LT
2003-2020 Chevrolet Express 3500 Base
2003-2020 Chevrolet Express 3500 LS
2007-2020 Chevrolet Express 3500 LT
2006-2009 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2014-2017 Chevrolet SS Base
2003-2006 Chevrolet SSR Base
1999-2005 Chevrolet Silverado 1500 Base
1999-2013 Chevrolet Silverado 1500 LS
1999-2013 Chevrolet Silverado 1500 LT
2002-2004 Chevrolet Silverado 1500 WT
2003-2006 Chevrolet Silverado 1500 SS
2004 Chevrolet Silverado 1500 Z71 Off-Road
2006-2013 Chevrolet Silverado 1500 WT
2007-2013 Chevrolet Silverado 1500 LTZ
2007 Chevrolet Silverado 1500 Classic LS
2007 Chevrolet Silverado 1500 Classic LT
2007 Chevrolet Silverado 1500 Classic SS
2007 Chevrolet Silverado 1500 Classic WT
2001-2003 Chevrolet Silverado 1500 HD LS
2001-2003 Chevrolet Silverado 1500 HD LT
2005 Chevrolet Silverado 1500 HD Base

…and 138 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Watch in action

Superior Sealing with Cometic MLS Head Gaskets

Achieve a reliable and robust seal for your GM LS-series engine with the Cometic Multi-Layer Steel (MLS) Head Gasket. Engineered for Gen-III and Gen-IV small block V8 engines, this gasket features a 4.080-inch bore and a .040-inch thickness, making it ideal for high-performance applications. Cometic's advanced HP shim technology is integrated into the design, significantly increasing the clampload around the combustion chamber. This innovative feature ensures superior sealability, even in open-deck block configurations, providing the durability and performance your engine demands.

Engineered for Performance and Durability

Cometic Gasket is a trusted name in engine sealing, and their MLS head gaskets are built to withstand the rigors of demanding engine builds. The multi-layer steel construction offers exceptional strength and resilience, resisting blowout and ensuring long-term performance. This gasket is designed to provide a precise fit and optimal compression for your LS1, LS2, LS3, or LS6 engine, contributing to overall engine health and power output. Whether you're building a street machine, a track car, or a heavy-duty workhorse, Cometic MLS head gaskets deliver the confidence you need.

  • Engine Fitment: Designed for GM LS1, LS2, LS3, and LS6 Gen-III/IV Small Block V8 engines.
  • Bore Size: 4.080 inches.
  • Thickness: .040 inches.
  • Construction: Multi-Layer Steel (MLS) for maximum durability and sealing.
  • Advanced Sealing: Features HP shim technology for increased clampload and superior sealability.
  • Engine Compatibility: Suitable for a wide range of GM vehicles utilizing LS-series engines.
  • Reliable Performance: Ensures a strong seal under high-performance conditions.

Ensure the integrity of your GM LS engine build with Cometic MLS Head Gaskets. Experience the peace of mind that comes with top-tier sealing technology. Find the best engine components at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2009 Buick LaCrosse Super
2004-2005 Buick Rainier CXL Plus
2004-2007 Buick Rainier CXL
2004-2007 Cadillac CTS V
2002-2005 Cadillac Escalade Base
2003-2005 Cadillac Escalade ESV Base
2002-2005 Cadillac Escalade EXT Base
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2007-2012 Chevrolet Avalanche LTZ
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2002-2005 Chevrolet Avalanche 1500 Base
2002-2006 Chevrolet Avalanche 1500 Z71
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
1998-2002 Chevrolet Camaro Z28
1998-2002 Chevrolet Camaro Z28 SS
2010-2015 Chevrolet Camaro SS
2011-2017 Chevrolet Caprice PPV
2009-2012 Chevrolet Colorado LT
1997-2013 Chevrolet Corvette Base
1998 Chevrolet Corvette Indianapolis 500 Pace Car
2001-2004 Chevrolet Corvette Z06
2003 Chevrolet Corvette 50th Anniversary Edition
2003 Chevrolet Corvette 50th Anniversary Edition Pace Car
2010-2013 Chevrolet Corvette Grand Sport
2003-2009 Chevrolet Express 1500 Base
2003-2009 Chevrolet Express 1500 LS
2006-2009 Chevrolet Express 1500 LT
2003-2020 Chevrolet Express 2500 Base
2003-2020 Chevrolet Express 2500 LS
2006-2020 Chevrolet Express 2500 LT
2003-2020 Chevrolet Express 3500 Base
2003-2020 Chevrolet Express 3500 LS
2007-2020 Chevrolet Express 3500 LT
2006-2009 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2014-2017 Chevrolet SS Base
2003-2006 Chevrolet SSR Base
1999-2005 Chevrolet Silverado 1500 Base
1999-2013 Chevrolet Silverado 1500 LS
1999-2013 Chevrolet Silverado 1500 LT
2002-2004 Chevrolet Silverado 1500 WT
2003-2006 Chevrolet Silverado 1500 SS
2004 Chevrolet Silverado 1500 Z71 Off-Road
2006-2013 Chevrolet Silverado 1500 WT
2007-2013 Chevrolet Silverado 1500 LTZ
2007 Chevrolet Silverado 1500 Classic LS
2007 Chevrolet Silverado 1500 Classic LT
2007 Chevrolet Silverado 1500 Classic SS
2007 Chevrolet Silverado 1500 Classic WT
2001-2003 Chevrolet Silverado 1500 HD LS
2001-2003 Chevrolet Silverado 1500 HD LT
2005 Chevrolet Silverado 1500 HD Base

…and 138 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Watch in action

Superior Sealing with Cometic MLS Head Gaskets

Achieve a reliable and robust seal for your GM LS-series engine with the Cometic Multi-Layer Steel (MLS) Head Gasket. Engineered for Gen-III and Gen-IV small block V8 engines, this gasket features a 4.080-inch bore and a .040-inch thickness, making it ideal for high-performance applications. Cometic's advanced HP shim technology is integrated into the design, significantly increasing the clampload around the combustion chamber. This innovative feature ensures superior sealability, even in open-deck block configurations, providing the durability and performance your engine demands.

Engineered for Performance and Durability

Cometic Gasket is a trusted name in engine sealing, and their MLS head gaskets are built to withstand the rigors of demanding engine builds. The multi-layer steel construction offers exceptional strength and resilience, resisting blowout and ensuring long-term performance. This gasket is designed to provide a precise fit and optimal compression for your LS1, LS2, LS3, or LS6 engine, contributing to overall engine health and power output. Whether you're building a street machine, a track car, or a heavy-duty workhorse, Cometic MLS head gaskets deliver the confidence you need.

  • Engine Fitment: Designed for GM LS1, LS2, LS3, and LS6 Gen-III/IV Small Block V8 engines.
  • Bore Size: 4.080 inches.
  • Thickness: .040 inches.
  • Construction: Multi-Layer Steel (MLS) for maximum durability and sealing.
  • Advanced Sealing: Features HP shim technology for increased clampload and superior sealability.
  • Engine Compatibility: Suitable for a wide range of GM vehicles utilizing LS-series engines.
  • Reliable Performance: Ensures a strong seal under high-performance conditions.

Ensure the integrity of your GM LS engine build with Cometic MLS Head Gaskets. Experience the peace of mind that comes with top-tier sealing technology. Find the best engine components at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2009 Buick LaCrosse Super
2004-2005 Buick Rainier CXL Plus
2004-2007 Buick Rainier CXL
2004-2007 Cadillac CTS V
2002-2005 Cadillac Escalade Base
2003-2005 Cadillac Escalade ESV Base
2002-2005 Cadillac Escalade EXT Base
2007-2012 Chevrolet Avalanche LS
2007-2012 Chevrolet Avalanche LT
2007-2012 Chevrolet Avalanche LTZ
2013 Chevrolet Avalanche Black Diamond LS
2013 Chevrolet Avalanche Black Diamond LT
2013 Chevrolet Avalanche Black Diamond LTZ
2002-2003 Chevrolet Avalanche 1500 North Face
2002-2003 Chevrolet Avalanche 1500 On Road Edition
2002-2005 Chevrolet Avalanche 1500 Base
2002-2006 Chevrolet Avalanche 1500 Z71
2003 Chevrolet Avalanche 1500 WBH
2004-2006 Chevrolet Avalanche 1500 Z66
2005-2006 Chevrolet Avalanche 1500 LS
2005-2006 Chevrolet Avalanche 1500 LT
1998-2002 Chevrolet Camaro Z28
1998-2002 Chevrolet Camaro Z28 SS
2010-2015 Chevrolet Camaro SS
2011-2017 Chevrolet Caprice PPV
2009-2012 Chevrolet Colorado LT
1997-2013 Chevrolet Corvette Base
1998 Chevrolet Corvette Indianapolis 500 Pace Car
2001-2004 Chevrolet Corvette Z06
2003 Chevrolet Corvette 50th Anniversary Edition
2003 Chevrolet Corvette 50th Anniversary Edition Pace Car
2010-2013 Chevrolet Corvette Grand Sport
2003-2009 Chevrolet Express 1500 Base
2003-2009 Chevrolet Express 1500 LS
2006-2009 Chevrolet Express 1500 LT
2003-2020 Chevrolet Express 2500 Base
2003-2020 Chevrolet Express 2500 LS
2006-2020 Chevrolet Express 2500 LT
2003-2020 Chevrolet Express 3500 Base
2003-2020 Chevrolet Express 3500 LS
2007-2020 Chevrolet Express 3500 LT
2006-2009 Chevrolet Impala SS
2006-2007 Chevrolet Monte Carlo SS
2014-2017 Chevrolet SS Base
2003-2006 Chevrolet SSR Base
1999-2005 Chevrolet Silverado 1500 Base
1999-2013 Chevrolet Silverado 1500 LS
1999-2013 Chevrolet Silverado 1500 LT
2002-2004 Chevrolet Silverado 1500 WT
2003-2006 Chevrolet Silverado 1500 SS
2004 Chevrolet Silverado 1500 Z71 Off-Road
2006-2013 Chevrolet Silverado 1500 WT
2007-2013 Chevrolet Silverado 1500 LTZ
2007 Chevrolet Silverado 1500 Classic LS
2007 Chevrolet Silverado 1500 Classic LT
2007 Chevrolet Silverado 1500 Classic SS
2007 Chevrolet Silverado 1500 Classic WT
2001-2003 Chevrolet Silverado 1500 HD LS
2001-2003 Chevrolet Silverado 1500 HD LT
2005 Chevrolet Silverado 1500 HD Base

…and 138 additional fitments. Contact us to confirm yours.

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