Cummins 4941148 Lubricating Oil Pump Assembly

The Cummins 4941148 is a gear-driven lubricating oil pump designed for 3.3 liter Tier 3 B3.3, ISB, and QSB diesel engines. It utilizes a 12 mm spur gear pair to deliver consistent oil pressure and flow rates required for heavy-duty engine lubrication. The pump features a flange mounting configuration for direct installation onto the engine gear housing. This component is critical for maintaining engine durability by ensuring adequate lubrication of rotating and reciprocating assemblies under high load conditions. It serves as a direct replacement for Cummins part numbers 4945774, 4982682, and C6204511201, and cross-references to Komatsu OEM numbers 6204-51-1201, 6640136, and 6640137.