Cabin air filters attach to the air intakes of the air conditioning unit and the heater unit to filter clean air into the cab and keep dirt and elements out. We carry cab air filters for almost all over the road big rig semi trucks as well as common pickup trucks. These air filters remove 97% of all diesel soot, dust, and dirt. They also reduce odors by 76% in addition to road grime and pollen. These filters are very important for maintaining the air quality in your vehicle and all filters are 100% guaranteed! So freshen up your Peterbilt, Kenworth, Freightliner, International, Volvo, Sterling, Western Star, or Mack today with one of our great cab AC filters and engine pre filters.