ACL CT-1 Coated Main Bearing Set | 5M8309HC-.25

The ACL 5M8309HC-.25 coated main bearing set is listed for Subaru EJ20, EJ22 and EJ25 engine configurations with the thrust bearing in position #5. This is the .25 mm size option, with Calico CT-1 dry-film lubricant coating. Ships fast across Canada and the US.

Application

• Engine families: Subaru EJ20, EJ22 and EJ25, subject to exact configuration checks.
• Thrust bearing location: Main position #5.
• No blanket model-year or vehicle application is implied; verify the installed engine and crankshaft.

Specifications

• Brand: ACL.
• Manufacturer part number: 5M8309HC-.25.
• Product: Main bearing set.
• Series: ACL Race Series, coated HC version.
• Size designation: .25 mm.
• Coating: Calico CT-1 dry-film lubricant.

Coated Bearing Design

ACL's coated bearing range combines its Race Series bearing technology with Calico CT-1 coating. The dry-film lubricant is intended to help reduce friction and abrasive wear. It does not replace the engine's oil supply or eliminate the need for correct bearing clearance and assembly procedures.

Engine-Building Requirements

Have a qualified engine builder confirm journal condition and dimensions, housing alignment, installed oil clearance and crankshaft end float. ACL advises measuring assembled bearing internal diameters before grinding a crankshaft to an undersize so journal dimensions can be matched to the required clearance. Account for the coated bearing surfaces and follow ACL's current handling and installation instructions.

This listing is for main bearings, not connecting-rod bearings. No horsepower rating, universal clearance target or guaranteed service life is claimed.

Ships fast across Canada and the US.