Product Description
Cummins Oil Pump 4003950 is designed to circulate engine oil through the lubrication system of compatible Cummins diesel engines.
This pump helps maintain proper oil flow and pressure to lubricate internal engine components, reduce friction, and protect against excessive wear during operation.
Used in select Cummins ISM, M11, L10, and QSM11 engine configurations. Suitable for replacement during engine rebuilding, lubrication system servicing, or repairs involving a worn or damaged oil pump.
Cross-references Cummins part numbers 3895756, 3883910, 3803379, and 3401186, along with PAI 141296 and Interstate-McBee M-4003950.
Verify compatibility with your engine serial number before ordering.
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