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- If you have brand-new BMW grommets and still has slow leak, then it is likely
from the weep hole. Virtually all washer pump motors have a weep hole.
- I took some random photos of BMW E90 from the internet to show ppl the basic design of a washer pump.
- Once it is apart, you will see: the motor shaft ---> plastic impeller. It is sealed
by a rubber seal. With time, this rubber seal shrinks down and starts leaking, a drop here a drop there etc.
Finding this rubber seal is close to impossible.
- BEST is a new VDO washer pump motor for $16-$20.
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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
Last edited by cn90; 03-22-2026 at 12:57 PM.
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