Description

The Cummins Oil Pump 3926203 is a precision-engineered diesel engine lubrication component designed to circulate engine oil under proper pressure to all critical internal components , ensuring reliable lubrication and long-term engine durability in Cummins diesel engines. This oil pump is a direct replacement for Cummins OEM part number 3804896 , making it ideal for engine rebuilds, overhauls, and oil system repairs. Manufactured from high-strength cast and machined materials , the Cummins 3926203 oil pump is engineered to withstand continuous operation, high oil temperatures, pressure fluctuations, and heavy-duty service conditions . The precisely machined internal gears ensure consistent oil flow, stable pressure output, and reduced internal wear throughout the engine’s operating range. Designed for accurate fitment and OEM-spec oil pressure delivery , this oil pump plays a critical role in protecting bearings, crankshaft journals, camshaft components, and valve train parts from premature wear. Replacing the oil pump during an engine overhaul is strongly recommended to restore proper lubrication performance and prevent catastrophic engine damage caused by oil starvation. This oil pump is commonly used in Cummins diesel engine rebuild, overhaul, and lubrication system repair applications , including on-highway trucks, industrial engines, and heavy-duty equipment.