ACL Race Series Main Bearing Set Standard Size — Fits 1995-2005 Subaru EJ20/EJ22/EJ25 Engines

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SKU: ACL5M8309H-STD
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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 ACL

ACL engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ACL lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

ACL Race Series Main Bearings for Subaru EJ Engines

When rebuilding your Subaru EJ20, EJ22, or EJ25 engine, reliability is paramount. The ACL Race Series Main Bearing Set is designed to withstand the high-load conditions of performance driving. Specifically engineered for applications requiring the thrust bearing in the #5 position, these bearings provide the oil clearance and structural integrity needed for high-revving engines.

Key Features and Benefits

  • Precision Engineering: Manufactured to exacting tolerances to ensure consistent oil film thickness.
  • High-Load Capacity: Built for endurance and performance, ideal for modified EJ-series blocks.
  • #5 Thrust Position: Specifically configured for Subaru blocks utilizing the #5 thrust bearing location.
  • Standard Size: Perfect for engines with factory-spec crankshaft journals.
  • Enhanced Durability: Superior material composition reduces friction and wear under extreme heat.

These bearings are a critical component for any serious engine build, whether you are restoring a classic Legacy or pushing the limits of an Impreza WRX. By choosing ACL, you are investing in industry-leading technology that protects your crankshaft and ensures smooth operation across the entire RPM range. Proper installation is essential; always verify your journal clearances with a qualified machinist before final assembly. Trust your engine build to the high-performance components available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Aero
1998 Subaru Forester Base
1998 Subaru Forester L
1998 Subaru Forester S
2000-2002 Subaru Forester Base
2000-2002 Subaru Forester L
2000-2002 Subaru Forester S
2003-2004 Subaru Forester X
2003-2004 Subaru Forester XS
1995-1996 Subaru Impreza LX
1995-1998 Subaru Impreza L
1995-1998 Subaru Impreza Outback
1998 Subaru Impreza RS
2000-2004 Subaru Impreza RS
2002-2004 Subaru Impreza Outback
2002-2004 Subaru Impreza TS
2002-2005 Subaru Impreza WRX
1991-1994 Subaru Legacy Sport
1996 Subaru Legacy LS
1996 Subaru Legacy Outback
1996-1998 Subaru Legacy Postal
1996-2000 Subaru Legacy L
1999 Subaru Legacy SUS 30th Anniversary
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
1999 Subaru Legacy Outback
1999-2000 Subaru Legacy GT
2000 Subaru Legacy GT Limited
2000 Subaru Outback Base
2000 Subaru Outback Limited

Product Details

Product Description
Part Numbers
Sizing & Fit

About ACL

ACL engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ACL lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

ACL Race Series Main Bearings for Subaru EJ Engines

When rebuilding your Subaru EJ20, EJ22, or EJ25 engine, reliability is paramount. The ACL Race Series Main Bearing Set is designed to withstand the high-load conditions of performance driving. Specifically engineered for applications requiring the thrust bearing in the #5 position, these bearings provide the oil clearance and structural integrity needed for high-revving engines.

Key Features and Benefits

  • Precision Engineering: Manufactured to exacting tolerances to ensure consistent oil film thickness.
  • High-Load Capacity: Built for endurance and performance, ideal for modified EJ-series blocks.
  • #5 Thrust Position: Specifically configured for Subaru blocks utilizing the #5 thrust bearing location.
  • Standard Size: Perfect for engines with factory-spec crankshaft journals.
  • Enhanced Durability: Superior material composition reduces friction and wear under extreme heat.

These bearings are a critical component for any serious engine build, whether you are restoring a classic Legacy or pushing the limits of an Impreza WRX. By choosing ACL, you are investing in industry-leading technology that protects your crankshaft and ensures smooth operation across the entire RPM range. Proper installation is essential; always verify your journal clearances with a qualified machinist before final assembly. Trust your engine build to the high-performance components available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Aero
1998 Subaru Forester Base
1998 Subaru Forester L
1998 Subaru Forester S
2000-2002 Subaru Forester Base
2000-2002 Subaru Forester L
2000-2002 Subaru Forester S
2003-2004 Subaru Forester X
2003-2004 Subaru Forester XS
1995-1996 Subaru Impreza LX
1995-1998 Subaru Impreza L
1995-1998 Subaru Impreza Outback
1998 Subaru Impreza RS
2000-2004 Subaru Impreza RS
2002-2004 Subaru Impreza Outback
2002-2004 Subaru Impreza TS
2002-2005 Subaru Impreza WRX
1991-1994 Subaru Legacy Sport
1996 Subaru Legacy LS
1996 Subaru Legacy Outback
1996-1998 Subaru Legacy Postal
1996-2000 Subaru Legacy L
1999 Subaru Legacy SUS 30th Anniversary
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
1999 Subaru Legacy Outback
1999-2000 Subaru Legacy GT
2000 Subaru Legacy GT Limited
2000 Subaru Outback Base
2000 Subaru Outback Limited

Product Details

Product Description

About ACL

ACL engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ACL lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

ACL Race Series Main Bearings for Subaru EJ Engines

When rebuilding your Subaru EJ20, EJ22, or EJ25 engine, reliability is paramount. The ACL Race Series Main Bearing Set is designed to withstand the high-load conditions of performance driving. Specifically engineered for applications requiring the thrust bearing in the #5 position, these bearings provide the oil clearance and structural integrity needed for high-revving engines.

Key Features and Benefits

  • Precision Engineering: Manufactured to exacting tolerances to ensure consistent oil film thickness.
  • High-Load Capacity: Built for endurance and performance, ideal for modified EJ-series blocks.
  • #5 Thrust Position: Specifically configured for Subaru blocks utilizing the #5 thrust bearing location.
  • Standard Size: Perfect for engines with factory-spec crankshaft journals.
  • Enhanced Durability: Superior material composition reduces friction and wear under extreme heat.

These bearings are a critical component for any serious engine build, whether you are restoring a classic Legacy or pushing the limits of an Impreza WRX. By choosing ACL, you are investing in industry-leading technology that protects your crankshaft and ensures smooth operation across the entire RPM range. Proper installation is essential; always verify your journal clearances with a qualified machinist before final assembly. Trust your engine build to the high-performance components available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2005 Saab 9-2X Aero
1998 Subaru Forester Base
1998 Subaru Forester L
1998 Subaru Forester S
2000-2002 Subaru Forester Base
2000-2002 Subaru Forester L
2000-2002 Subaru Forester S
2003-2004 Subaru Forester X
2003-2004 Subaru Forester XS
1995-1996 Subaru Impreza LX
1995-1998 Subaru Impreza L
1995-1998 Subaru Impreza Outback
1998 Subaru Impreza RS
2000-2004 Subaru Impreza RS
2002-2004 Subaru Impreza Outback
2002-2004 Subaru Impreza TS
2002-2005 Subaru Impreza WRX
1991-1994 Subaru Legacy Sport
1996 Subaru Legacy LS
1996 Subaru Legacy Outback
1996-1998 Subaru Legacy Postal
1996-2000 Subaru Legacy L
1999 Subaru Legacy SUS 30th Anniversary
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
1999 Subaru Legacy Outback
1999-2000 Subaru Legacy GT
2000 Subaru Legacy GT Limited
2000 Subaru Outback Base
2000 Subaru Outback Limited

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