Genuine OEM Volkswagen Freewheel Gearbox, part number 020911335C. This freewheel gearbox, also known as a starter drive or Bendix, is a crucial part of the starter motor assembly. Its function is to engage the engine's flywheel to start the engine and then disengage automatically once the engine is running, preventing damage to the starter. Manufactured to strict OEM tolerances, it ensures reliable starting performance. Genuine OEM parts provide the correct engagement ratio and durability for the starter system.