ACL Bearings 4B8360-.50 Connecting Rod Bearing Set Undersize - 0.50mm

The ACL Bearings 4B8360-.50 is a high-performance connecting rod bearing set designed for Toyota 4-cylinder 1998cc 3SFE engines (1986-1991). This set features a 0.50mm undersize specification to accommodate crankshafts that have been machined during engine rebuilds, ensuring precise clearances and optimal bearing retention.

Race Series Tri-Metal Construction:

• Multi-layered tri-metal copper alloy construction for high strength and excellent seizure resistance
• High-strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backing on all rod bearings to improve bearing lining support and retention
• Elimination of flash plating on bearing backs to improve heat transfer and maximize grip in the housing

Performance Engineering:

• Increased crush for improved bearing retention through higher radial contact pressures
• Increased eccentricity to compensate for bore distortion at high RPM and assist in hydrodynamic oil film formation
• Precision manufactured to exact tolerances for reliable fit and consistent clearances
• Designed to withstand the extreme demands of racing and high-performance applications

ACL Race Series bearings are trusted by leading engine builders worldwide and have proven themselves in competition engines from sport compact drift racing to NASCAR, IHRA, and NHRA racing. The unique combination of design, metallurgy, and engineering provides the endurance and capability required for both high-performance street builds and dedicated race engines.