Genuine OEM Audi Steering Ignition Lock Housing, part number 4B0905851P. This critical component is designed to house and protect the steering and ignition lock mechanisms, playing a vital role in vehicle security and starting functionality. It is typically located within the steering column assembly. Weighing approximately 0.398 kg, this housing is precisely engineered for a perfect fit and reliable operation. Choosing a genuine OEM part ensures exact dimensions, material quality, and compatibility with the vehicle's security systems, preventing issues common with aftermarket alternatives.