ACL 5M8309H-.50 High Performance Main Bearing for Subaru EJ20, EJ22 and EJ25 Engines

ACL Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) 0.50mm Oversized High Performance Main Bearing

The ACL 5M8309H-.50 High Performance Main Bearing is engineered for Subaru EJ20, EJ22 and EJ25 engines requiring a 0.50 mm oversized main bearing in the number 5 thrust position. Designed for performance-oriented engine builds and precise crankshaft support, this bearing helps maintain dependable lubrication and stable rotating assembly operation under demanding conditions.

ACL high-performance main bearings are manufactured with application-specific materials and engineering to support consistent clearance control, load distribution and wear resistance. The oversized design is intended for crankshafts machined to accommodate the specified bearing size, so proper measurement of the block and crankshaft is essential before installation. Verify the thrust location and engine specifications during assembly to ensure correct fitment.

This automotive replacement and performance component is listed for select Subaru Forester applications from 1998 through 2002 and is intended for use with compatible EJ-series engines. Professional installation by a qualified engine builder is recommended. Always compare the existing bearing, crankshaft measurements and manufacturer service specifications before ordering or installation.

Brief Description

ACL high-performance main bearing for Subaru EJ20, EJ22 and EJ25 engines, designed for the number 5 thrust position and a 0.50 mm oversized crankshaft application.

Key Product Specifications & Technical Data

• Brand: ACL
• Part Number: 5M8309H-.50
• Application: Automotive engine main bearing
• Engine Family: Subaru EJ20, EJ22 and EJ25
• Bearing Position: Number 5 thrust position
• Oversize: 0.50 mm oversized
• Product Type: High-performance main bearing
• Vehicle Fitment: Select Subaru Forester models from 1998 through 2002

What's Included

One ACL 5M8309H-.50 high-performance main bearing for the specified application.

Features:

• Application-Specific Design: Developed for Subaru EJ20, EJ22 and EJ25 engine applications.
• Number 5 Thrust Position: Intended for engines using the thrust bearing location at the number 5 main position.
• 0.50 mm Oversized Fit: Designed for crankshafts machined to accept a 0.50 mm oversized main bearing.
• Performance Engine Support: Helps promote reliable crankshaft support, clearance control and wear resistance in demanding engine builds.

Fitments:
1991 Subaru Legacy L
1991 Subaru Legacy LS
1991 Subaru Legacy LSi
1991 Subaru Legacy Sport
1992 Subaru Legacy L
1992 Subaru Legacy LS
1992 Subaru Legacy LSi
1992 Subaru Legacy Sport
1993 Subaru Legacy L
1993 Subaru Legacy LS
1993 Subaru Legacy LSi
1993 Subaru Legacy Sport
1994 Subaru Legacy Alpine Sport
1994 Subaru Legacy GT
1994 Subaru Legacy L
1994 Subaru Legacy LS
1994 Subaru Legacy LSi
1994 Subaru Legacy Outdoor
1994 Subaru Legacy Sport
1994 Subaru Legacy Sun Sport
1994 Subaru Legacy Touring
1995 Subaru Impreza L
1995 Subaru Impreza LX
1995 Subaru Impreza Outback
1996 Subaru Impreza L
1996 Subaru Impreza LX
1996 Subaru Impreza Outback
1996 Subaru Legacy Brighton
1996 Subaru Legacy L
1996 Subaru Legacy LS
1996 Subaru Legacy Outback
1996 Subaru Legacy Postal
1997 Subaru Impreza Brighton
1997 Subaru Impreza L
1997 Subaru Impreza Outback
1997 Subaru Legacy Brighton
1997 Subaru Legacy L
1997 Subaru Legacy Postal
1998 Subaru Forester Base
1998 Subaru Forester L
1998 Subaru Forester S
1998 Subaru Impreza L
1998 Subaru Impreza Outback
1998 Subaru Impreza RS
1998 Subaru Legacy Brighton
1998 Subaru Legacy L
1998 Subaru Legacy Postal
1999 Subaru Legacy Brighton
1999 Subaru Legacy GT
1999 Subaru Legacy L
1999 Subaru Legacy L 30th Anniversary
1999 Subaru Legacy Limited 30th Anniversary
1999 Subaru Legacy Outback
1999 Subaru Legacy Outback Limited
1999 Subaru Legacy SUS 30th Anniversary
2000 Subaru Forester Base
2000 Subaru Forester L
2000 Subaru Forester S
2000 Subaru Impreza RS
2000 Subaru Legacy Brighton
2000 Subaru Legacy GT
2000 Subaru Legacy GT Limited
2000 Subaru Legacy L
2000 Subaru Outback Base
2000 Subaru Outback Limited
2001 Subaru Forester Base
2001 Subaru Forester L
2001 Subaru Forester S
2001 Subaru Impreza RS
2002 Subaru Forester Base
2002 Subaru Forester L
2002 Subaru Forester S
2002 Subaru Impreza Outback
2002 Subaru Impreza RS
2002 Subaru Impreza TS
2002 Subaru Impreza WRX
2003 Subaru Forester X
2003 Subaru Forester XS
2003 Subaru Impreza Outback
2003 Subaru Impreza RS
2003 Subaru Impreza TS
2003 Subaru Impreza WRX
2004 Subaru Forester X
2004 Subaru Forester XS
2004 Subaru Impreza Outback
2004 Subaru Impreza RS
2004 Subaru Impreza TS
2004 Subaru Impreza WRX
2005 Saab 9-2X Aero
2005 Subaru Impreza WRX

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1