Genuine OEM Volkswagen Differential Bearing Housing, part number 01M409117A. This component encloses and supports the differential bearings, crucial for maintaining proper gear mesh and reducing friction within the transmission. It is positioned on the front left side of the differential assembly. Constructed from durable machined aluminum, it measures approximately 10.7 cm in length, width, and 5.9 cm in height. Choosing a genuine OEM housing ensures exact dimensional accuracy and material integrity, critical for the longevity and performance of the drivetrain.