Aftermarket 1992233 Engine Oil Pump Assembly

This engine oil pump assembly serves as a direct replacement for Caterpillar part numbers 199-2233, 1992233, and CA1992233. It is engineered for the Mitsubishi S3L2 and S4L2 series diesel engines found in Caterpillar mini hydraulic excavator models 302.5C, 303, and 304. The pump is a gear-type positive displacement unit driven by the engine crankshaft or camshaft gear train, designed to maintain required lubrication pressure across operating speeds. The housing is constructed from high-strength aluminum alloy with precision-machined steel gears to ensure volumetric efficiency and wear resistance. It incorporates an integral pressure relief valve calibrated to OEM specifications to prevent over-pressurization of the lubrication system. This unit is a non-genuine aftermarket replacement part manufactured to meet OEM fit, form, and function requirements for the specified applications.