Thread: Name that leak
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      10-19-2020, 04:01 PM   #9
a bit obsessed

Drives: '16 340i x Drive
Join Date: Nov 2019
Location: Mid-Atlantic

iTrader: (0)

Thanks everyone for the helpful replies. I did some more digging and it's definitely one of two auxiliary radiators that I have. From my internet research, most if not all have an auxiliary radiator on the driver side (US Spec), but a smaller subset have a second auxiliary radiator on the passenger side; M Sport and Track package, but perhaps others as well.

To my knowledge, this car did not come with the track package, but it is an M Sport.

The part number is on the side: 17117628057

It seems as though the same part is for either the driver or passenger sides.
These are about $200.00 online and seem to be very easy to replace.

No warranty concerns here.