Description

The Cummins Main Bearing Set C3802070 (Standard Size) is a precision-engineered bottom-end bearing solution designed to restore correct crankshaft support, oil clearance, and long-term durability in Cummins diesel engines . Manufactured to OEM specifications, this main bearing set ensures accurate fitment, consistent oil film control, and reliable performance under heavy-duty operating conditions. Main bearings play a critical role in supporting the crankshaft and maintaining proper oil pressure throughout the engine. The C3802070 STD bearing set is intended for engines with crankshaft journals within factory specifications. For engines with reground crankshafts, undersize options are available to restore correct oil clearance and prevent premature wear. These bearings are produced using high-quality bearing materials with advanced overlay technology to deliver excellent load-carrying capacity, fatigue resistance, and protection against metal-to-metal contact. Precision shell geometry ensures even load distribution and stable crankshaft rotation during high-load and continuous-duty operation. The Cummins C3802070 main bearing set is commonly installed during engine rebuilds, bottom-end overhauls, crankshaft replacements, and professional remanufacturing projects . It is trusted by diesel technicians, fleet maintenance teams, and engine builders who require OEM-level reliability and longevity. Available Size Options STD: C3802070 0.25 mm Undersize: C3802071 0.50 mm Undersize: C3802072 0.75 mm Undersize: C3802073