This oil filler cap is intended for the Audi 100 and Audi 200 (1979-1991), where it ensures the closure of the rocker cover and the sealing of the lubrication circuit. As part of the restoration or maintenance of a classic vehicle, its replacement is essential when the original part shows signs of wear, deformation or leakage. A new part conforming to the original reference, it allows you to restore the sealing and operating conditions provided by the manufacturer. Careful replacement helps preserve the mechanics of these classic models in the long term.