BOSCH 6008C HEPA Cabin Air Filter - Compatible with Select Mazda 3, 5

Bosch always delivers on quality, this filter is no exception. There is a noticeable difference in the filtration of pollen and dust inside your car after installing this. I notice that after swapping whatever crap filter was in my car before for this hepa filter the amount of dust accumulation was significantly reduced. After 15k miles I replaced the filter and opted for the same Bosch one! Tried and true, you won’t regret upgrading to this.

Once I put these in I could feel the reduced cooling and airflow. They area higher resistance to airflow than non HEPA types. So, what does than mean for you - if you live where your car is cooling heavily this filter is going to impact cooling your car down, taking longer and possibly not at all. The same will be true for heating, though less so as heating requires less air.Running the fan, I could also hear a low rumble at full airflow I never heard before. I check and found I was hearing turbulence where the air was leaking past the filters, they aren't a snug fit. So there goes that HEPA rating if they're not filtering all the air!

Didn't fit my Mazda 3 2010, even though it said that was compatible. The filter itself looks fine, though.