that particular vent pipe is not for the final drive, rather, it is for the transmission vent.

there is ANOTHER very similar vent pipe for the front diff a bit closer to the front of the motor.

both are there so that if the tranny or final drive is submerged in water, the water will not enter the unit.both are there so that if the tranny or final drive is submerged in water, the water will not enter the unit.

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2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.2019) -> 100k (9.2021) -> 123k (8.2025)
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SOLD : 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.2019) -> 205k (9.2021)
SOLD : 1997 328is Coupe - Hellrot Red
SOLD : 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP