Genuine OEM Audi Spare Wheel Locking Nut, part number 8W0803899. This specialized nut is used to securely fasten the spare wheel in its designated storage compartment. It is typically located in the trunk or cargo area, holding the spare wheel in place. Made from durable black plastic with a metal threaded insert, it weighs 0.0885 kg. Genuine OEM locking nuts provide the correct thread pitch and robust construction to ensure the spare wheel remains safely stowed, preventing rattling and potential damage during driving.