nodoz
Bronze Member

Joined: 02 Aug 2008
Posts: 1
Location: Indianapolis,IN
Status:
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 New and confused
Hello all.
Got a new ( to me ) 98' 740il. Runs great but leaking coolant from a little cap on top of the expansion tank causing it to overheat. It's not coming from the big radiator cap, but a much smaller cap just in front of the radiator cap and has sort of a "plus" sign on it.
I ordered a replacement expansion tank from Advance Bimmer parts, but it didn't come with this little cap.
Anyone know what the exact name of this little guy is and how I might get one ?
Norris
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