Genuine OEM Volkswagen Exterior Mirror Housing, part number 5TC857508D9B9. This is the primary structural component of the side mirror assembly, containing the internal mechanisms and providing mounting points for the mirror glass and cap. It is designed to withstand external elements and impacts. The housing is finished in Satin Black (9B9) and weighs 1.362 kg. Genuine OEM mirror housings ensure precise fitment, proper alignment of internal components, and durability against road hazards, maintaining the mirror's functionality and the vehicle's aesthetic.