BMW E46 3 Series models have a unique outside air filtration system that uses a small filter to clean the outside air before it enters the car. Over time, these filters become clogged with outside contaminants and even leaves, causing your ventilation system to lose efficiency. While not as hermetically safe as duct tape and plastic sheeting, replacement of this filter will get clean fresh air flowing through your car once again.
64-31-1-000-004-M87
Microfilter, BMW E46 3 Series, All Except M3 (1999-05), Each Brand: Micronair [Photo]
$21.75
Activated Carbon Microfilter, BMW E46 3 Series, All (1999-05), Each
64-31-9-071-935-M87
Activated Carbon Microfilter, BMW E46 3 Series, All (1999-05), Each Brand: Micronair [Photo]
$28.00
64-31-9-071-935-M347
Activated Carbon Microfilter, BMW E46 3 Series, All (1999-05), Each Brand: Helsa [Photo]