ACL Bearings 5M909HX-STD H-Series Main Bearing Set, Standard, Extra Oil Clearance for Small Block Chevy

The ACL Bearings 5M909HX-STD Main Bearing Set is designed for Small Block Chevy engines requiring standard-size main bearings with extra oil clearance. Part of ACL’s H-Series performance bearing line, this set is engineered to support demanding engine applications where dependable crankshaft support and consistent oil control are essential. The extra oil clearance helps accommodate performance-oriented builds and operating conditions that require increased lubrication clearance.
Manufactured for precision fitment, the ACL H-Series main bearings feature a high-strength construction intended to handle elevated loads and sustained engine use. The standard sizing is suited for crankshafts that have not been undersized, while the application-specific design helps promote proper bearing alignment, oil distribution, and long-term durability when installed according to the engine builder’s specifications. Always verify crankshaft measurements, housing condition, and required clearances before installation.
The ACL Bearings 5M909HX-STD kit provides a practical replacement or performance-building solution for compatible Small Block Chevy applications. Its focused design makes it suitable for street performance, racing, and other high-demand engine projects where bearing quality and correct oil clearance are important. This product is not air restricted and does not require truck freight, supporting convenient handling for typical automotive installation needs.

Features:

• Brand: ACL Bearings

• Part Number: 5M909HX-STD

• Bearing Type: H-Series main bearing set

• Application: Small Block Chevy engines

• Size: Standard

• Oil Clearance: Extra oil clearance

• Intended Use: Performance, replacement, and high-demand engine applications

• Air Restricted: No

• Truck Freight Only: No