It’s always a good idea to check your serpentine belt at every oil change for cracks which would be visible on the underside of the belt. This belt is very important as it drives accessories such as water pump (non-S), supercharger/water pump (S), alternator and A/C compressor.

We’ve put together a detailed DIY Tech Article for you with step-by-step info as well as great pictures. You can check out the article here:

MINI Serpentine Belt Replacement

Go For It!!