Genuine OEM Volkswagen Dowel Sleeve, part number 059103139A. This component is used for precise alignment and positioning during the assembly of critical engine components, such as the cylinder head to the engine block. It ensures that parts are correctly seated, which is vital for proper sealing and operation. Made from durable metal, it provides the necessary strength and resistance to engine forces. Genuine OEM dowel sleeves are manufactured to exact tolerances, guaranteeing perfect alignment and contributing to the overall reliability and performance of the engine.