18T_BT

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MA7008O

Just checked the O-ring and it was gone. Changed.
On more question with regards the vent hole. I blow through it and could listen to air going pass both ways: in and out. Is that out or is the ventilation valve also gone?
Thanks,

tfitch03

mine was leaking around the same location as yours. I changed the "L" shaped rubber hose going to the pump and that fixed the leak. I guess the old hose was damaged.

mystert

That's the ventilation hole for the reservoir. Fluid heats up and expands, air goes out the hole, it cools back down, air come back in the hole.

MA7008O

Yes, but, can fluid go through?

mystert

If you overfill the reservoir then yes. Its designed to be there.

MA7008O

No overfill, never.

Let's see how it goes with just the new O-ring.

Thanks

URO Support

If anyone was wondering, URO P/S Reservoir Cap Seal 32 41 1 128 333 is technically for a multitude of BMW applications, has a 42mm ID with a 2mm cross section, and is made of EPDM rubber. It's not surprising that the seal could fit a variety of Porsche applications however, since many Porsche and BMW models share power steering reservoirs.