The coolant expansion tank in your vehicle collects coolant as it expands and contracts throughout a range of temperatures.
Because it is subjected to such drastic changes on a regular basis, the plastic often crack, break, and then leak. Don't risk a messy engine bay or even more serious damage; replace that old expansion tank!
Kit includes:
When replacing, be sure to also have replacement coolant shipped to your door. ECS Tuning carries the proper coolant for your German automobile. Search under your model > Engine > Cooling.