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Too old to do work like this but my mechanic said it's is phenomenal! He said he watched a youtube vid and swapped it in place of the original. He even said it was a pretty cool teplacement. I've got an '05 focus wagon with only 45k miles, supposedly a southern car but it stalled when coming to a stop. Thought it was a tranny issue, but turns out the motor didn't get enough air. No more tranny issues, and a very resonsive car. Love it! My mechanic loves it! If you got a focus with stalling issues, try it, it might solve your problem like it did mine.
A K&N 33-2113 high performance replacement air filter was paired with the Dorman 258-519 air filter box to replace the non-serviceable air box in my 2005 Ford Focus ST. Although the Dorman air filter box comes with a paper element, I opted to upgrade to the K&N filter. Installation is straight forward: Jack up the car and remove the LF wheel; Remove the wheel liner and the front shroud; remove the left fog light assembly for easier access; Unbuckle the air tube straps on top and disconnect the clamp on the air intake; Unscrew the three mounting bolts and remove the old air filter box. Installation is the reverse. The filter can be serviced by removing the wheel and wheel liner and pulling out the air filter service tray. Enjoy new found performance. Nothing short of AMAZING describes the restored power in my car.
The new filter box fit perfectly on my daughter's 2006 Ford Focus ZX5! The old filter box was full of leaves and dirt even though the indicator was still in the green - not good. It actually took me longer to replace this filter than to replace the engine mounts - about three hours. I am really glad that the next time I have to do this it will be as simple as pulling back the wheel well cover and turning a couple of wing nuts. I was thinking of using a cheaper "cold air intake" until someone pointed out that they can suck in water when driving through a deep puddle and hydro-lock the engine. I prefer the modified stock route. Thanks Dorman!
Great price, fast delivery and everything needed to replace original. Kind of a pain to remove original filter assembly, have to move inner fender, headlight assembly and grill but only took about half hour. Comes with nice paper work listing new replaceable filter element for future. Had almost 200,000 miles on original and had driven thru lots of dust and salt. Took it apart to see how bad it was and found layered foam filter that really was not all that clogged up. I do feel better with new filter and think it will do a better job.
So far superior to factory air cleaner housing ... On tbe factory unit you just about have to take the front end assembly of in order to change the air filter. With this excellent unit you just have to take off the left front tire pop open the hatch and install new air filter. Easy to do when doing standard tire rotation.
Although this says its for 2005 and up focus', I installed it on my 2004 2.3 PZEV focus today and it fit and worked fine. Great product, a little on the pricey side for what it is, but given the alternative its a great product.