Identification 0BU - output shaft transfer case to front axle diff
green o-ring for all Amarok 0BU transfer cases/center differentials for Touareg, Q7 with 0BU transfer case/center differential Cayenne with PL72 transfer case
it is possible that this o-ring is not required for all mentioned applications. This green o-ring does not replace the black o-ring which is used in some applications in the same location.
0BU, Touareg, Q7 - transfer case/center differential - Touareg - output shaft to rear axle/final drive 0BU, Amarok - output shaft transfer case to front axle diff PL72ATC, PL72T - output shaft, front