Cometic Street Pro EJ257 101mm Bore Complete Gasket Kit — Fits 08-18 Subaru WRX STI

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SKU: CGSPRO2048C
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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.

Comprehensive Gasket Solution for EJ257

The Cometic Street Pro Complete Gasket Kit (PRO2048C) is the ultimate choice for enthusiasts rebuilding their 2008-2018 Subaru EJ257 engines. Designed for both street and performance applications, this kit includes every seal and gasket required to ensure a leak-free, high-performance engine build. Cometic's commitment to quality ensures that your engine maintains optimal compression and fluid integrity.

Advanced Material Technology

Cometic utilizes a sophisticated blend of materials to handle the high heat and pressure cycles of the turbocharged EJ257 platform:

  • MLS (Multi-Layer Steel): Industry standard for head gaskets, providing maximum sealing force.
  • AFM (Aluminum Foam Material): Ensures perfect sealing on uneven or machined surfaces.
  • Aramid Fiber & Armor Clad: Provides heat resistance and structural durability.

Vehicle Fitment

This kit is compatible with a wide range of Subaru WRX STI models, including:

  • 2008-2014 Subaru Impreza WRX STI
  • 2010 Subaru Impreza WRX STI Special Edition
  • 2015-2018 Subaru WRX STI (Base, Launch Edition, and Limited)

Whether you are performing a simple top-end refresh or a full bottom-end overhaul, the Street Pro kit simplifies the process by grouping all necessary components into one convenient package. Avoid the hassle of sourcing individual gaskets and trust in the proven reliability of Cometic. Get your engine back on the road with confidence by shopping at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2014 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011-2014 Subaru Impreza WRX STI Limited
2015 Subaru WRX STI Launch Edition
2015-2018 Subaru WRX STI Base
2015-2018 Subaru WRX STI Limited

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.

Comprehensive Gasket Solution for EJ257

The Cometic Street Pro Complete Gasket Kit (PRO2048C) is the ultimate choice for enthusiasts rebuilding their 2008-2018 Subaru EJ257 engines. Designed for both street and performance applications, this kit includes every seal and gasket required to ensure a leak-free, high-performance engine build. Cometic's commitment to quality ensures that your engine maintains optimal compression and fluid integrity.

Advanced Material Technology

Cometic utilizes a sophisticated blend of materials to handle the high heat and pressure cycles of the turbocharged EJ257 platform:

  • MLS (Multi-Layer Steel): Industry standard for head gaskets, providing maximum sealing force.
  • AFM (Aluminum Foam Material): Ensures perfect sealing on uneven or machined surfaces.
  • Aramid Fiber & Armor Clad: Provides heat resistance and structural durability.

Vehicle Fitment

This kit is compatible with a wide range of Subaru WRX STI models, including:

  • 2008-2014 Subaru Impreza WRX STI
  • 2010 Subaru Impreza WRX STI Special Edition
  • 2015-2018 Subaru WRX STI (Base, Launch Edition, and Limited)

Whether you are performing a simple top-end refresh or a full bottom-end overhaul, the Street Pro kit simplifies the process by grouping all necessary components into one convenient package. Avoid the hassle of sourcing individual gaskets and trust in the proven reliability of Cometic. Get your engine back on the road with confidence by shopping at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2014 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011-2014 Subaru Impreza WRX STI Limited
2015 Subaru WRX STI Launch Edition
2015-2018 Subaru WRX STI Base
2015-2018 Subaru WRX STI Limited

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.

Comprehensive Gasket Solution for EJ257

The Cometic Street Pro Complete Gasket Kit (PRO2048C) is the ultimate choice for enthusiasts rebuilding their 2008-2018 Subaru EJ257 engines. Designed for both street and performance applications, this kit includes every seal and gasket required to ensure a leak-free, high-performance engine build. Cometic's commitment to quality ensures that your engine maintains optimal compression and fluid integrity.

Advanced Material Technology

Cometic utilizes a sophisticated blend of materials to handle the high heat and pressure cycles of the turbocharged EJ257 platform:

  • MLS (Multi-Layer Steel): Industry standard for head gaskets, providing maximum sealing force.
  • AFM (Aluminum Foam Material): Ensures perfect sealing on uneven or machined surfaces.
  • Aramid Fiber & Armor Clad: Provides heat resistance and structural durability.

Vehicle Fitment

This kit is compatible with a wide range of Subaru WRX STI models, including:

  • 2008-2014 Subaru Impreza WRX STI
  • 2010 Subaru Impreza WRX STI Special Edition
  • 2015-2018 Subaru WRX STI (Base, Launch Edition, and Limited)

Whether you are performing a simple top-end refresh or a full bottom-end overhaul, the Street Pro kit simplifies the process by grouping all necessary components into one convenient package. Avoid the hassle of sourcing individual gaskets and trust in the proven reliability of Cometic. Get your engine back on the road with confidence by shopping at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008-2014 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011-2014 Subaru Impreza WRX STI Limited
2015 Subaru WRX STI Launch Edition
2015-2018 Subaru WRX STI Base
2015-2018 Subaru WRX STI Limited

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