The manufacturer states that the dual-stage charcoal-activated filtering system will remove 97% of the dirt, dust, and soot as well as reduce odors by 76%. We can tell you that the diesel exhaust smell is greatly diminished. Easy to install, the dual filtering system fits over the factory vents and is held in place with self tapping Phillip’s-head screws.

Cab Fresh Filter Kit - DODGE ('94-'02)