ACL Race Series Main Bearing Set 5M1959HC-.25, 0.25 mm Undersize, Coated for Honda B-Series

The ACL Race Series Main Bearing Set, part number 5M1959HC-.25, is designed for Honda and Acura B-Series engines requiring main bearings with a 0.25 mm undersize specification. This coated bearing set is engineered for performance applications where dependable crankshaft support, consistent clearance, and durable operation are essential. It is suitable for select Honda and Acura engines ranging from 1.6L to 2.4L, making it a practical choice for engine rebuilds, performance upgrades, and precision machining projects.
ACL BEARINGS develops Race Series components with materials and construction intended to withstand demanding engine conditions. The coated surface helps promote reliable wear resistance and smooth bearing performance when properly installed with the correct crankshaft and housing measurements. The 5M1959HC-.25 set is intended for applications where the crankshaft has been machined to accommodate a 0.25 mm undersize main bearing, so accurate measurement and professional installation are recommended before assembly.
This Honda B-Series main bearing set provides a focused fitment solution for builders seeking dependable internal engine components without unnecessary modifications. Verify engine specifications, bearing clearance, crankshaft condition, and manufacturer application requirements before installation. The set is not air restricted and does not require truck freight, supporting convenient ordering for eligible automotive repair and performance applications.

Features:

• Brand: ACL BEARINGS

• Part Number: 5M1959HC-.25

• Bearing Type: Main bearing set

• Series: Race Series

• Bearing Size: 0.25 mm undersize

• Surface: Coated

• Application: Select Honda and Acura B-Series engines from 1.6L to 2.4L

• Installation: Verify crankshaft machining and bearing clearances before assembly

• Air Restricted: No

• Truck Freight Only: No