Backup Light Switch (Reverse Light Switch) aluminium seal washer
Type 1 Beetle 1961-1979
Karmann Ghia 1961-1974
Type 2 Kombi 1961-1979
Type 25 T3 Vanagon 1980-1983 (Air Cooled)
Fits between the switch and the transmission nose cone, preventing the trans from leaking gear oil