Genuine OEM Volkswagen Short Block, part number 03L100104R. This is the core engine assembly, also known as a long block without the cylinder head. It includes the engine block, crankshaft, connecting rods, and pistons, forming the foundation of the engine. Manufactured to precise OEM specifications, this short block ensures optimal performance and durability. Genuine OEM parts guarantee exact fitment and the same quality as original factory components.