1. yes
2. they deleted on 01 because few owners came back to dealership replace them AND file a complaint when the cabin pipes clogged because of it.
3. filters airborne particles from outside and into your cabin
4. separate filter trays are found at junkyards, separate filters or a complete filter assembly are sold on eBay, (HOWEVER, you can also use just the filter itself from a 2013 TOYOTA 4RUNNER fits perfectly)
5. all you need is flat head screwdriver and hammer. lightly tap/chisel the plastic shield out
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