Charge Air Cooler Reservoir Cap, BMW - Many 2015+ Models

This part is listed by BMW as BMW part number 17117639024 (17 11 7 639 024) and is described as the cap for the small coolant reservoir found on many 2015+ BMW models. This cap fits on the small coolant reservoir often used for the heat exchanger in the intake system and is a separate cooling circuit than the larger primary cooling system.

While your BMW cooling system may be considered very reliable, it's all depending on this coolant reservoir cap. This cap is not just to seal the coolant expansion tank - it regulates and maintains the pressure in the cooling system. A failed cap can lower the pressure inside the system and lead to poor cooling performance and loss of power. It can also be the source of annoying coolant leaks. Replacement of the cap is recommended every three years to ensure optimum cooling efficiency and performance. It's a simple and inexpensive preventative maintenance step.

This part number replaces the previous BMW number 17132754264.

This is a Genuine BMW coolant cap with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.