Description

The Cummins Main Bearing Set 3802132 (0.50 mm undersize) is a precision-engineered diesel engine bearing set designed for engines where the crankshaft main journals have been machined 0.50 mm undersize . This set is a direct replacement for Cummins OEM part number 3802071 , making it ideal for professional engine rebuilds and overhauls following crankshaft regrinding. Manufactured using high-quality multi-layer bearing alloys , these undersized main bearings are built to withstand high combustion loads, continuous rotational stress, and heavy-duty operating conditions typical of Cummins diesel engines. The advanced bearing construction provides excellent fatigue resistance, effective heat dissipation, and stable oil film retention to ensure consistent lubrication. Designed for accurate fitment and precise oil clearance , the Cummins 3802132 0.50 mm undersize main bearing set helps restore proper oil pressure, reduce friction, and prevent premature crankshaft wear after machining. Using the correct undersized bearings is critical to ensuring long-term engine reliability and OEM-level performance. This main bearing set is commonly used in Cummins diesel engine rebuild and overhaul applications , including on-highway trucks, industrial engines, and heavy-duty equipment requiring dependable undersized internal engine components.