Genuine OEM Audi Ignition Starter Switch, part number 6RA905865B. This essential component is responsible for activating the vehicle's ignition system and engaging the starter motor, allowing the engine to begin operation. It provides the necessary electrical connections for various ignition states, from accessory power to engine cranking. Weighing approximately 0.057 kg, this switch measures 0.078 m in length, 0.055 m in width, and 0.05 m in height. Opting for a genuine OEM ignition starter switch ensures reliable electrical contact, precise mechanical operation, and proper integration with the vehicle's security and immobilizer systems.