Coolant Leak?
 

Hi

I have an 2001 x5 3.0i . My coolant is starting to leak from this plastic philips head looking thing next to my coolant cap. Its located on right of coolant cap. Can Anyone please help me idetiify this leak?

TIA

just found part leaking its number 2 Vent screw in image can someone please hlep?
RealOEM.com * BMW E53 X5 3.0i Cooling System Water Hoses

If thats all it is try to tighten the screw first
or buy the $3.00 vent screw from the dealer
and see if that solves it.

As with anything plastic in a cooling system the screw can get really weak and come apart after so many years/miles. I'd try to loosen it first before trying to tighten in just in case it is about to pop apart. If the head does come off the bottom part of it can be a pain to remove if it gets messed u too much so be careful with it.