The ACL 5M8309H-STD is a standard-size H-Series main bearing set for Subaru EJ-Series engines, sized for a factory, unmachined crankshaft journal.
Specifications:
- Type: Main Bearing Set
- Series: H-Series
- Size: Standard
- Engine Fitment: Subaru EJ-Series
- Part Number: 5M8309H-STD
FAQ
Which engines does the 5M8309H-STD fit?
It fits Subaru EJ-Series engines.
What does "Standard" size mean on this bearing set?
It means the bearings are sized for a factory, unmachined crankshaft journal.
What ACL series is this part of?
It is part of ACL's H-Series main bearing line.

