Cometic GM LS1 SB 4.100in Bore .056in MLS Head Gasket — Fits GM LS Engines

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SKU: CGSC5489-056
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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.

Premium Sealing for GM LS Performance Engines

When pushing your GM LS engine to its limits, you need a head gasket that won't fail under pressure. The Cometic GM LS1 4.100 inch Bore .056 inch MLS Head Gasket is designed for builders who require a specific thickness for compression tuning and a seal that holds up to extreme conditions. Cometic’s multi-layer stainless steel (MLS) technology is the industry standard for high-performance sealing.

Engineered for Durability

This gasket features three to five layers of stainless steel, providing the structural integrity needed for high-load environments. The outer layers are embossed and coated with Viton, a high-performance fluoroelastomer that is heat resistant up to 250°C (482°F). This coating ensures that the gasket conforms to surface finishes and maintains a tight seal, even when dealing with varying thermal expansion rates between the head and block.

  • Bore Size: 4.100 inches
  • Compressed Thickness: .056 inches
  • Construction: Multi-layer stainless steel
  • Coating: Heat-resistant Viton
  • Compatibility: Fits various GM LS-based engines
  • Performance: Excellent for high-compression and forced induction

By choosing Cometic, you are investing in a product that resists corrosion and provides the rebound necessary to keep your engine sealed under the most demanding conditions. Whether you are building a street beast or a dedicated track car, trust the quality of Cometic gaskets from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2004 Avanti II Base
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
1998-2002 Chevrolet Camaro Base
2010-2015 Chevrolet Camaro LS
2010-2015 Chevrolet Camaro LT
2010-2015 Chevrolet Camaro SS
2012-2015 Chevrolet Camaro ZL1
2014-2015 Chevrolet Camaro Z/28
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
2006-2013 Chevrolet Corvette Z06
2008 Chevrolet Corvette 427 Limited Edition Z06
2009-2013 Chevrolet Corvette ZR1
2010-2013 Chevrolet Corvette Grand Sport
2011 Chevrolet Corvette Z06 Carbon
2013 Chevrolet Corvette 427
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

…and 151 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.

Premium Sealing for GM LS Performance Engines

When pushing your GM LS engine to its limits, you need a head gasket that won't fail under pressure. The Cometic GM LS1 4.100 inch Bore .056 inch MLS Head Gasket is designed for builders who require a specific thickness for compression tuning and a seal that holds up to extreme conditions. Cometic’s multi-layer stainless steel (MLS) technology is the industry standard for high-performance sealing.

Engineered for Durability

This gasket features three to five layers of stainless steel, providing the structural integrity needed for high-load environments. The outer layers are embossed and coated with Viton, a high-performance fluoroelastomer that is heat resistant up to 250°C (482°F). This coating ensures that the gasket conforms to surface finishes and maintains a tight seal, even when dealing with varying thermal expansion rates between the head and block.

  • Bore Size: 4.100 inches
  • Compressed Thickness: .056 inches
  • Construction: Multi-layer stainless steel
  • Coating: Heat-resistant Viton
  • Compatibility: Fits various GM LS-based engines
  • Performance: Excellent for high-compression and forced induction

By choosing Cometic, you are investing in a product that resists corrosion and provides the rebound necessary to keep your engine sealed under the most demanding conditions. Whether you are building a street beast or a dedicated track car, trust the quality of Cometic gaskets from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2004 Avanti II Base
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
1998-2002 Chevrolet Camaro Base
2010-2015 Chevrolet Camaro LS
2010-2015 Chevrolet Camaro LT
2010-2015 Chevrolet Camaro SS
2012-2015 Chevrolet Camaro ZL1
2014-2015 Chevrolet Camaro Z/28
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
2006-2013 Chevrolet Corvette Z06
2008 Chevrolet Corvette 427 Limited Edition Z06
2009-2013 Chevrolet Corvette ZR1
2010-2013 Chevrolet Corvette Grand Sport
2011 Chevrolet Corvette Z06 Carbon
2013 Chevrolet Corvette 427
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

…and 151 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.

Premium Sealing for GM LS Performance Engines

When pushing your GM LS engine to its limits, you need a head gasket that won't fail under pressure. The Cometic GM LS1 4.100 inch Bore .056 inch MLS Head Gasket is designed for builders who require a specific thickness for compression tuning and a seal that holds up to extreme conditions. Cometic’s multi-layer stainless steel (MLS) technology is the industry standard for high-performance sealing.

Engineered for Durability

This gasket features three to five layers of stainless steel, providing the structural integrity needed for high-load environments. The outer layers are embossed and coated with Viton, a high-performance fluoroelastomer that is heat resistant up to 250°C (482°F). This coating ensures that the gasket conforms to surface finishes and maintains a tight seal, even when dealing with varying thermal expansion rates between the head and block.

  • Bore Size: 4.100 inches
  • Compressed Thickness: .056 inches
  • Construction: Multi-layer stainless steel
  • Coating: Heat-resistant Viton
  • Compatibility: Fits various GM LS-based engines
  • Performance: Excellent for high-compression and forced induction

By choosing Cometic, you are investing in a product that resists corrosion and provides the rebound necessary to keep your engine sealed under the most demanding conditions. Whether you are building a street beast or a dedicated track car, trust the quality of Cometic gaskets from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2004 Avanti II Base
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
1998-2002 Chevrolet Camaro Base
2010-2015 Chevrolet Camaro LS
2010-2015 Chevrolet Camaro LT
2010-2015 Chevrolet Camaro SS
2012-2015 Chevrolet Camaro ZL1
2014-2015 Chevrolet Camaro Z/28
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
2006-2013 Chevrolet Corvette Z06
2008 Chevrolet Corvette 427 Limited Edition Z06
2009-2013 Chevrolet Corvette ZR1
2010-2013 Chevrolet Corvette Grand Sport
2011 Chevrolet Corvette Z06 Carbon
2013 Chevrolet Corvette 427
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

…and 151 additional fitments. Contact us to confirm yours.

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