Clevite Allis-Chalmers G138 G139 G149 G160 4 Cyl Main Bearing Set

This is a Clevite MS902AL20 main bearing set, designed for Allis-Chalmers 4-cylinder engines using the G138, G139, G149, or G160 engine families. Main bearings are critical for keeping your crankshaft properly supported and aligned within the engine block. They handle the immense forces generated during combustion and rotation, ensuring smooth operation and preventing premature wear on the crankshaft and block.

Clevite is a well-known name in engine components, and this bearing set is built to meet the demands of these engines. The bearings are manufactured with materials and tolerances that help manage heat and friction, which are key factors in engine longevity. When you're rebuilding or repairing an engine, using a solid set of main bearings like these from Clevite is a smart move to ensure the crankshaft spins freely and without excessive play.

Installing main bearings is part of a larger engine overhaul. It's important to ensure the crankshaft journals are clean and within specification before installation. Always refer to the manufacturer's service manual for the correct installation procedures and torque specifications.