ACL Bearings 5M1039HX-STD H-Series Main Bearing Set, Standard Extra Oil Clearance for Big Block Ford

The ACL Bearings 5M1039HX-STD H-Series Main Bearing Set is designed for Big Block Ford engines requiring standard-size main bearings with extra oil clearance. This bearing kit supports dependable crankshaft operation in performance, racing, and high-load applications where proper oil control and durable bearing construction are essential.
The H-Series design is engineered to accommodate increased oil clearance requirements while maintaining reliable load support across the main journals. Standard sizing makes this set suitable for crankshafts that remain within the manufacturer’s standard specifications, helping provide accurate fitment when used with properly prepared engine components. Always verify crankshaft measurements, housing bore condition, and application compatibility before installation.
Built by ACL Bearings, this main bearing set is intended for engine builders, performance enthusiasts, and professional technicians seeking consistent bearing quality for Big Block Ford applications. The kit includes the main bearing components required for installation, while the 5M1039HX-STD part number provides a clear reference for ordering and fitment verification. Professional installation and adherence to the engine manufacturer’s assembly procedures are recommended.

Features:

• Brand: ACL Bearings

• Part Number: 5M1039HX-STD

• Bearing Type: H-Series main bearing set

• Fitment: Big Block Ford engines

• Size: Standard

• Oil Clearance: Extra oil clearance

• Application: Performance, racing, and high-load engine builds

• Kit Contents: Main bearing set

• Air Restricted: No

• Truck Freight Only: No