The Bosch 2006209531 is a genuine starter pinion gear, also known as a freewheel gearbox or bendix drive, designed for various Bosch starter motors. This essential component features 9 teeth, a diameter of 28.5 mm, and an overall length of 51 mm. It ensures reliable engagement and disengagement of the starter motor with the engine flywheel, providing efficient engine starting. This specific pinion has a right (clockwise) rotation and is commonly found in OSGR (Overrunning Clutch Starter with Gear Reduction) type starter motors used in a wide range of agricultural and industrial machinery.