This starter drive acts as a top-tier aftermarket replacement bearing Bosch part number 0399D73278. The unit features 12 teeth, 16 splines alongside clockwise rotation. Constructed from wear-resistant quenched alloy steel, this part manages ongoing friction and shock loads produced during recurring engine startup. Precision CNC machining provides exact dimensions to support straightforward fitting. It may be used to swap out faulty OEM starter drives and bring back stable cranking torque for dependable engine ignition.
OEM: Bosch 0399D73278; Servicing: 0399707102, STB1865BA
APPLICATION:
One-way clutch outer diameter: 45.3
Gear tooth tip: 32
Bushing inner diameter: 11
Overall length: 46
Gear teeth number: 12
Spline number: 16
Rotation: CW