ACL Bearings 4B745P-40 Connecting Rod Bearing Set .40mm Oversized for Chevy 4-Cylinder

The ACL Bearings 4B745P-40 is a precision-engineered connecting rod bearing set designed for Chevrolet 4-cylinder engines with 112, 121, 134, and 153 cubic inch displacements manufactured from 1962 to 1998. This oversized bearing set features a .40mm oversize specification, making it ideal for engines that have been machined or require slightly larger bearing dimensions to restore proper clearances.

Advanced Trimetal Construction:

• High-strength overlay plate with reduced thickness for superior fatigue resistance under high-stress conditions
• Hardened steel backing on all rod bearings provides enhanced support for the bearing lining and improved retention in the housing
• Precision-machined surfaces ensure optimal oil film formation and consistent performance
• ISO-certified manufacturing processes guarantee consistent quality and dimensional accuracy

Performance Benefits:

• Designed to handle increased loads and higher RPM operation in performance applications
• Improved heat dissipation characteristics extend bearing life
• Precise tolerances reduce friction and wear for enhanced engine durability
• Suitable for both street performance and racing applications

ACL Bearings has been a trusted name in engine bearing technology since the 1960s, with proven success in motorsports ranging from Formula 1 to drag racing. Each bearing set is manufactured using state-of-the-art tooling and design software to deliver the precision and reliability demanded by engine builders and performance enthusiasts worldwide.