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Changing Your Cabin Air Filter
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If you can breathe you can change your cabin air filter.
How often to change your cabin air filter
BMW reccomends you change your cabin air filter every Inspection I, which is about every 30,000 miles. However, it doesn't hurt anything to change it at any time. It is used to help filter the air that is blown into the car, so if you live in a dusty environment, you should probably be changing it sooner than that. You can also change it if you would like some fresher air!
Cabin Air Filter (BMW P# 64-31-9-071-935) $35
Replace the cabin air filter
Replace the old cabin air filter
2. Take out the new filter and slide it into place. Note how the old one is dirty, which means it was filtering out the bad stuff.
3. Replace the cover and the three twist screws and enjoy some fresher air!