Genuine OEM Volkswagen Engine Crankshaft, part number 03L105021D. This vital engine component is responsible for converting the linear reciprocating motion of the pistons into rotational motion, which drives the vehicle's transmission. It is precision-machined from high-strength metal and weighs approximately 14.8 kg. Choosing a genuine OEM crankshaft ensures exact balance, material integrity, and precise tolerances for optimal engine performance and longevity.