Cometic MLS Head Gasket 101mm Bore .040in — Fits 03-11 Subaru EJ255 EJ257

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SKU: CGSC4587-040
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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 Durability with Cometic MLS

The Cometic MLS (Multi-Layer Steel) Head Gasket is the industry standard for high-performance Subaru EJ255 and EJ257 engines. With a 101mm bore and a .040" compressed thickness, this gasket offers the perfect balance of durability and performance for your turbocharged build. Constructed from three to five layers of high-grade stainless steel, it provides exceptional strength and the ability to rebound under varying thermal conditions.

Why Choose Cometic MLS?

  • Corrosion Resistance: High-quality stainless steel construction ensures long-term reliability in harsh environments.
  • Viton Coating: Both sides are coated with a heat-resistant Viton rubber (up to 482°F) to maintain a seal under extreme load.
  • Engineered for Performance: Designed to accommodate the specific surface finishes and load conditions of Subaru turbo engines.
  • Reliable Sealing: Embossed outer layers ensure maximum pressure retention in the combustion chamber.

This gasket is a direct fit for a wide range of Subaru vehicles, including the Baja Turbo, Forester XT, and various Impreza models. By choosing Cometic, you are investing in a component that has been track-tested and proven to withstand the rigors of high-boost driving. Ensure your engine build is leak-free and reliable with the best gaskets on the market. Find your specialized engine components and performance upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2004-2006 Subaru Baja Turbo
2004-2005 Subaru Forester XT
2007-2010 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 XT
2009 Subaru Forester XT
2009-2013 Subaru Forester X Limited
2009-2013 Subaru Forester X Premium
2011-2013 Subaru Forester XT Touring
2003-2014 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza WRX Limited
2007 Subaru Impreza WRX STI Limited
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2014 Subaru Impreza WRX Limited
2003-2006 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2006-2009 Subaru Legacy GT spec.B
2007-2009 Subaru Legacy GT Limited
2010-2012 Subaru Legacy 2.5GT

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 Durability with Cometic MLS

The Cometic MLS (Multi-Layer Steel) Head Gasket is the industry standard for high-performance Subaru EJ255 and EJ257 engines. With a 101mm bore and a .040" compressed thickness, this gasket offers the perfect balance of durability and performance for your turbocharged build. Constructed from three to five layers of high-grade stainless steel, it provides exceptional strength and the ability to rebound under varying thermal conditions.

Why Choose Cometic MLS?

  • Corrosion Resistance: High-quality stainless steel construction ensures long-term reliability in harsh environments.
  • Viton Coating: Both sides are coated with a heat-resistant Viton rubber (up to 482°F) to maintain a seal under extreme load.
  • Engineered for Performance: Designed to accommodate the specific surface finishes and load conditions of Subaru turbo engines.
  • Reliable Sealing: Embossed outer layers ensure maximum pressure retention in the combustion chamber.

This gasket is a direct fit for a wide range of Subaru vehicles, including the Baja Turbo, Forester XT, and various Impreza models. By choosing Cometic, you are investing in a component that has been track-tested and proven to withstand the rigors of high-boost driving. Ensure your engine build is leak-free and reliable with the best gaskets on the market. Find your specialized engine components and performance upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2004-2006 Subaru Baja Turbo
2004-2005 Subaru Forester XT
2007-2010 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 XT
2009 Subaru Forester XT
2009-2013 Subaru Forester X Limited
2009-2013 Subaru Forester X Premium
2011-2013 Subaru Forester XT Touring
2003-2014 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza WRX Limited
2007 Subaru Impreza WRX STI Limited
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2014 Subaru Impreza WRX Limited
2003-2006 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2006-2009 Subaru Legacy GT spec.B
2007-2009 Subaru Legacy GT Limited
2010-2012 Subaru Legacy 2.5GT

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 Durability with Cometic MLS

The Cometic MLS (Multi-Layer Steel) Head Gasket is the industry standard for high-performance Subaru EJ255 and EJ257 engines. With a 101mm bore and a .040" compressed thickness, this gasket offers the perfect balance of durability and performance for your turbocharged build. Constructed from three to five layers of high-grade stainless steel, it provides exceptional strength and the ability to rebound under varying thermal conditions.

Why Choose Cometic MLS?

  • Corrosion Resistance: High-quality stainless steel construction ensures long-term reliability in harsh environments.
  • Viton Coating: Both sides are coated with a heat-resistant Viton rubber (up to 482°F) to maintain a seal under extreme load.
  • Engineered for Performance: Designed to accommodate the specific surface finishes and load conditions of Subaru turbo engines.
  • Reliable Sealing: Embossed outer layers ensure maximum pressure retention in the combustion chamber.

This gasket is a direct fit for a wide range of Subaru vehicles, including the Baja Turbo, Forester XT, and various Impreza models. By choosing Cometic, you are investing in a component that has been track-tested and proven to withstand the rigors of high-boost driving. Ensure your engine build is leak-free and reliable with the best gaskets on the market. Find your specialized engine components and performance upgrades at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2004-2006 Subaru Baja Turbo
2004-2005 Subaru Forester XT
2007-2010 Subaru Forester XT Limited
2008 Subaru Forester Sports 2.5 XT
2009 Subaru Forester XT
2009-2013 Subaru Forester X Limited
2009-2013 Subaru Forester X Premium
2011-2013 Subaru Forester XT Touring
2003-2014 Subaru Impreza WRX
2004-2014 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX TR
2006-2007 Subaru Impreza WRX Limited
2007 Subaru Impreza WRX STI Limited
2009-2014 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2014 Subaru Impreza WRX Limited
2003-2006 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2006-2009 Subaru Legacy GT spec.B
2007-2009 Subaru Legacy GT Limited
2010-2012 Subaru Legacy 2.5GT

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