coolant cap
 

Cap has only been used for less then 100Km. Bought a new coolant reservoir tank a week later and it came with a brand new cap. So the cap I bought a week prior to the tank is now an extra.

where did you get this one from?

I bought it from the dealer. Thought it was a bad cap causing my low coolant light to come on. then came on here and figured out i needed a whole new reservoir. and the new reservoir I then bought came with a cap.