Denso 228000-6320 Starter Motor Assembly

The Denso 228000-6320 is a 12-volt, 1.4-kilowatt offset gear reduction (OSGR) starter motor designed for Kubota vertical water-cooled diesel engines. It features a 13-tooth pinion with clockwise rotation. The unit serves as a direct replacement for Kubota OEM part numbers 16235-63010, 16235-63011, and 16235-63012. This starter motor is engineered for reliable cold-cranking performance in compact construction and agricultural equipment. It is compatible with Kubota engine series D905, D1005, D1105, V1305, V1505, and WG1605. Primary applications include Kubota KX41-2, KX91-2 compact excavators and BX2200, BX2660 compact utility tractors. The superseded Denso part number 428000-2640 (9-tooth) is also referenced for interchangeability.