Dodge decided that our 4th Gen RAMS do not need cabin air filtration, this is an easy way to install one so it looks factory.
(1) Sharp boxcutter or X-acto
(1) Filter box 'lid'. Dodge part number 68052292AA (About $11)
(1) Cabin Air Filter. Dodge part number 5058693AA, OR, Purolater C25869 ($7), Hastings HAAF1328, or Wix 24578
(These parts are all "OEM" for a 2010 Dodge Avenger, Caliber, Compass, etc. They will not be found by searching in any parts book under 'Dodge Ram'!)
Step 1. Remove lower glove box by gently pulling inward on both sides where the 'ears' are.
Step 2. Locate the filter slot area, which is shaped like a short, fat "T". Using the sharp tool of your choice, cut out the area just inside of the "T". You do not need to cut out the lower 'leg' of the "T", just go straight across. (Refer to pic)
Step 3. Slide in filter with airflow arrow pointing down. The filter, when properly installed, will protrude outside of the slot some. It will not be 'flush'.
Step 4. 'Snap' on the lid. You will need to press on the little 'ears' on each end of the lid (marked with blue tape in pic) until you hear a 'click'. This 'locks' the lid into place.
Step 5. Re-install glove box, and done!
The only "hard' part is trimming out the slot, but the material is pretty thin,,, Just take your time,,,
Future servicing of this filter is super easy!!! Takes about 2 minutes, most of which will be spent emptying the glovebox!