Over the years and with exposure to extremely hot coolant, the coolant hoses in your vehicle can take a beating. Being made of reinforced rubber, these hoses can fail in a number of ways. Splitting at a hose clamp, swelling, cracking, and breaking are just a few of the ways this hose can leave you stranded.

NOTE: BMW's updated 2-way design requires the additional purchase of 17127598004 (Radiator Hose Cap) to block off the Y-connector in the expansion tank vent hose, or the expansion tank vent hose can also be replaced with 17127536235 to eliminate the Y-Connector entirely!