Genuine BMW & MINI Coolant Expansion Tank Bleeder Screw – 17111712788, 3142380000

Losing coolant?

Maybe that little plastic bleeder screw on your expansion tank is cracked or stripped.

This is the genuine BMW part to fix it.

It's the vent screw for the coolant expansion tank, commonly used on many BMW and MINI models.

The part numbers are 17111712788 and 3142380000.

It's a small, cheap part that can save you a big headache.

Brand new, genuine BMW.

Just unscrew the old one and pop this new one in.

Makes bleeding your cooling system after a refill way easier.

Don't mess with aftermarket plastic – get the real deal.

UPC is 5055535151333.