The ACL 5M590HX-STD is a Standard-size main bearing set from ACL's H-Series line, built for Small Block Ford engines, with the Extra Oil Clearance option. Standard size fits a stock, unmachined crankshaft main journal, and the added oil clearance is machined into the bearing for engines that call for extra oil flow at the journal.
Specifications:
- Type: Main Bearing Set
- Series: H-Series
- Size: Standard, Extra Oil Clearance
- Engine Fitment: Small Block Ford
- Part Number: 5M590HX-STD
FAQ
What size is the ACL 5M590HX-STD bearing set?
It is a Standard-size set machined with Extra Oil Clearance.
What engines does the ACL 5M590HX-STD fit?
It is designed for Small Block Ford engines.
What does Extra Oil Clearance mean on this bearing?
It means the bearing is machined with additional clearance at the journal for engines that need more oil flow than the standard-clearance set provides.
What ACL series is the 5M590HX-STD part of?
It belongs to ACL's H-Series line of engine bearings.

