ACL Race Series 0.025 Connecting Rod Bushes for BMW B58, S58 - Toyota GR Supra

The ACL Race Series 6B1510H-.025 connecting rod bushes are designed for BMW B58B30 and S58B30 3.0-liter turbo 6-cylinder engines, as well as the Toyota GR Supra equipped with the B58 engine. This 0.025 version allows you to select a thickness different from the STD version in order to adapt the mounting to the sizes and operating clearance of the crankshaft.

Developed for engines subjected to high stresses, the ACL Race Series is particularly well-suited for engine rebuilds and tuning. The bearings provide the interface between the connecting rod top ends and the crankshaft journals, where controlling oil clearance is essential for maintaining proper oiling.

Part number 6B1510H-.025 uses ACL F781 material and follows the sizes of the 6B1510H family designed for B58B30 and S58B30 engines. It serves as an alternative to the STD version when the engine’s sizes require this specific measurement.

The choice between the STD, 0.025, or 0.25 versions should not be based solely on the engine’s preparation level. Before mounting, precisely measure the crankpins and check the operating clearance to select the appropriate bearing size.

Technical Specifications

Brand: ACL
Range: Race Series
Manufacturer Part Number: 6B1510H-.025
Type: Connecting rod bushes
Dimension: 0.025
ACL Material: F781
Engines: BMW B58B30 and S58B30
Cubic capacity: 2998 cm³
Configuration: turbocharged cylinders in line
Standard rod journal diameter: 49.975 to 49.992 mm
Standard bearing housing diameter: 53.600 to 53.619 mm
Maximum thickness at the top (STD dimension): 1.793 mm
Maximum width: 19.55 mm
Applications: BMWs equipped with B58B30 or S58B30 engines and the Toyota GR Supra equipped with the B58