ACL Bearings 4B8036H-.25 Race Series Connecting Rod Bearing Set Mitsubishi 4G91 4G92 4G93

The ACL Race Series Connecting Rod Bearing Set is engineered for high-performance race engines, delivering unmatched durability and performance under extreme conditions. This bearing set is designed for Mitsubishi 4G91 (1496cc), 4G92 (1597cc), 4G93 (1834cc), and 4G93T (1834cc turbocharged) inline-4 engines. The .25mm undersize dimension accommodates engine rebuilds where the crankshaft journals have been machined, ensuring a precise and secure fit.

Key Features:

• Tri-layer metal construction with hardened steel backing to withstand high RPM conditions, high stress loads, and high temperatures
• Tri-metal design engineered to withstand higher RPM conditions with high-strength overlay plate and reduced thickness for improved fatigue properties
• Trimetal lead, tin, copper and nickel composition for superior strength and seizure resistance
• Manufactured to exacting tolerances with micron tolerance machining and precision measurement systems for consistent accuracy in wall thickness and crush
• Full 180° grooved uppers with matching partial groove in lowers to reduce interruption to big end oil supply, plus tapered groove run-out for smooth oil supply
• Enhanced material properties including improved dynamic thickness, heat conduction, and oil distribution

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world, used in championship-winning race engines from sport compact drift racing to NASCAR, IHRA and NHRA competitions. This set includes bearings for all four connecting rods. ACL is an engine builder's top choice for quality and consistency, and is trusted as an Original Equipment supplier.