Genuine OEM Volkswagen Base Engine, part number 028100031FX. This is a new engine assembly. It forms the core of the engine, housing the crankshaft, connecting rods, and pistons. This part weighs 92 kg and has dimensions of 0.64m x 0.44m x 0.36m. Genuine OEM base engines are manufactured to precise tolerances for optimal engine balance and longevity.