Yanmar YM123900-32000 Engine Oil Pump Assembly

The YM123900-32000 is a gear-type engine oil pump assembly designed for lubrication systems in compact diesel engines. It features a high-strength cast steel body with a 30mm gear height, engineered to maintain consistent oil pressure under demanding operating conditions. The pump is driven directly by the engine crankshaft or camshaft gear train. This component serves as a direct replacement for OEM part numbers YM123900-32000 and YM123900-32001 used in Komatsu and Yanmar industrial power units. It is compatible with Komatsu 4D106T, 4D106D, 4D106-1FA, and S4D106-1FH engines, as well as Yanmar 4TNE106, 4TNE106T, 4TNE106D, 4TNV94L, 4TNV98, and 4TNV106T engines. Applications include hydraulic excavators, wheel loaders, and backhoe loaders in the 8-15 ton operating weight class.