Description

The Cummins Rod Bearing 3802071 (0.25 mm undersize) is a precision-engineered diesel engine bearing designed for engines where the connecting rod journals have been machined 0.25 mm undersize . This bearing is a direct replacement for Cummins OEM part number 3802073 , making it ideal for professional engine rebuilds and overhauls following crankshaft regrinding. Manufactured using high-quality multi-layer bearing alloys , this undersized rod bearing is built to withstand high combustion forces, heavy loads, and continuous high-RPM operation common in Cummins diesel engines. The advanced bearing construction provides excellent fatigue resistance, effective heat dissipation, and consistent oil film retention to ensure reliable lubrication under demanding conditions. Designed for accurate fitment and precise oil clearance , the Cummins 3802071 0.25 mm undersize rod bearing helps restore proper oil pressure, reduce friction, and prevent premature wear of the crankshaft and connecting rods after machining. Using the correct undersized bearing is critical for maintaining engine durability and OEM-level performance. This rod bearing 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.