BMW E46 M3 Cabin Air Filters, Heppa Filters, & Microfilters

Breathe fresh air again! As an important part of your car's heating ventilation and air conditioning (HVAC) system, the microfilter should be replaced every year or 10,000 miles. If the microfilter (cabin air filter) becomes clogged it can reduce the blower output and lead to odoriferous emissions.

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