The stock AirIntake FilterHousing is in the RightFore corner of the engine compartment. Shown & listed below are several PanelStyle PaperElement Filters, Width * Length * Height noted, that fit in this housing.
* FactoryOE
* Prefered Largest PaperElement
- Wix# wa6734.........9i055W*7i598L*2i441H = Largest Paper Element + Hi Availability
- Fram# ca10354.....9i055W*7i598L*2i441H = Largest Paper Element
- Mahle# Lx742........9i094W*7i598L*2i441H = Largest Paper Element
- Wix# 46253............8i791W*7i575L*2i295H
- Fram# ca9563.......9i062W*7i880L*2i285H
- Mann# c24123.......9i094W*7i638L*2i283H
- Ford# fa1658.........8i790W*7i580L*2i280H = FactoryOE
- Ford# fa1744.........8i970W*7i740L*2i260H
- SuperTech# 1355...8i970W*7i740L*2i185H = Lo Cost + Hi Availability
Tools are not required to open the FilterHousing; Filter should be removed+inspected about every 6mths & replaced if dirty, more often for high usage or when road conditions are notably dusty\muddy\snowy:
- Shutoff Engine, then disconnect MAssFlowSensor & PositiveCaseVentTube from the AirIntake Duct.
- Open the 2 QuickLatches on the inboard side of Filter Housing UpperCover.
- Slide UpperCover ~1inch sideways to release it, slightly compressing the Duct accordion.
- Lift UpperCover to reveal the Filter; a BungyCord is handy to hold the UpperCover out of the way.
- Remove+inspect the Filter; replace with a new Filter if visibly dirty.
- CompressedAir <60psi BackBlow is a temporary fix for a dirty Filter until a new Filter is available.
- Remove any dirt or debris from the Filter Housing LowerBody; RodentNests are often found here.
- Reverse above procedures for reassembly; don't forget to reconnect both MAFSensor & PCVTube.
Housing LowerBody Modification
In 2020May, I began experimenting with the FilterHousing LowerBody, as pictured below, removing the InletRestrictor & eventually cutting away most of the box, leaving only mounting pins & basic frame. An "Extreme CheeseBox Mod" , it removes a potential RodentNest, maximizes AirFlow, stays compatible with factory Filters, & costs $0. If unsatisfactory after a few months running, I'll revert to a JunkYard original.
Update 2021Nov: after using this modified FilterBox for a year, conclusion is it actually created problems: IntakeAir Temp ran 10~15f hotter, IntakeAir Noise was much louder above 3500rpm, & Power\Mileage did not improve; an unmodified AirFilterBox from a JunkYard ~$30 is now installed; lesson learned.
* Original With AirFlow Restricted
* Modified With AirFlow Maximized
Links To Related Info
Thanks go to the brave souls who've preceded me in similar adventures & freely shared their experience:
- http://youtu.be/pxXr6W5bZtg?t=0
- http://youtu.be/mBn5a__c-yI?t=39
- http://youtu.be/RdXVxbd59es?t=36
- http://youtu.be/C9RYoL0mLyw?t=1
- http://youtu.be/MSjQPDT-C8s?t=1
- http://youtu.be/BDV7MyqQvSA?t=2
- http://youtu.be/Z8FaQQ4Tww8?t=6
- http://youtu.be/CpxHe7sZwsE?t=0
- http://www.ranger-forums.com/engine-drivetrain-122/how-airbox-mod-132753
- http://www.ranger-forums.com/engine-drivetrain-122/how-air-silencer-removal-10455
- https://www.explorerforum.com/forums/threads/3rd-gen-air-box-mod.278734
- https://www.explorerforum.com/forums/threads/some-mods-today-swiss-cheese-silencer-silencer-panel-and-k-n-sotp-yes.434780/page-2