Finally Changed the Air Filter in the Thunderbolt CAI
The Donaldson filter had around 20,000 miles on it and was looking bad. I needed a cone filter with a three inch diameter and it came down to an AEM or a K&N filter. The K&N was $7 more so I figured I would install a K&N RE-0930 filter. At least the truck is idling lower now and hopefully it will help the fuel economy.
For what it's worth, the K&N filter is practically double in size from the Donaldson filter, and it does fit inside the air box, albeit there is not a lot of room for anything else, haha.
2010 4.0 SOHC Ranger XLT 4x4
Bucket seats, center console, OHC, Mustang dome light, LEDs, Linex bedliner, Leer cap, stepbars, skid plates, rear hitch