The Genuine VW / Audi Ignition Starter Switch - 4B0905849 is a high-quality, original equipment manufacturer (OEM) part designed specifically for Volkswagen and Audi vehicles. This switch is responsible for starting the engine and controlling the electrical system of the vehicle. It is made from durable materials to ensure long-lasting performance and reliability. This switch is a direct replacement for the original part and is compatible with a wide range of VW and Audi models. It is an essential component for the proper functioning of the vehicle's ignition system.