I've found that the K&N air filter for a 2004 Dodge SRT will drop right in the stock air filter box on a 6.7. It's an 1/8 of an inch bigger in one measurement, but it fits no problem. Cheap power for anyone interested.

 

What's the part number?
33-2247 ?
Thanks
Keith

 

No,it's 33-2297. Sorry bout that

 

Hold your K&N up to the light and tell me what you see. In mine, I seen little bitty holes.

 

I held my K&N up to the light and dropped it in the dumpster. Now I've got a Nanofiber...

 

Think these guys are trying to tell you to get rid of your K&N. They let too big of particles through and it's bad on your Cummins!!!

 

According to K&N's web site, there filter obtane a 98% filtration rating against dust particles as small as 5.5 microns. Thats pretty good if you ask me. There good enough for ALL Indy cars.

 

I have a K&N myself, and I'm not really arguing for it or against it, but I will say one thing about the Indycar statement. They are only expecting to get about 500 miles out of their engine! I have had 0 problems with my K&N and intend on keeping it, other than that, a lot of people have opinions.

 

I must apologize if I make anyone think that K&N makes a bad filter. In my area we have alot of winds that move some dust and alot of road construction, so I have to keep a close eye on the air filters. My opinion is that there is better technology in air, fuel, and oil fiters these days, and K&N is good, but not the best for my situation. I like the fact that I now have an airfilter that filters better, flows as much if not more, and I don't have to wash it out and re-oil it.

 

True people will have there opinions,and thats fine. I've had 1 in my 2002 truck for 107,000 miles,and still going, with no problem. Just thought I would share the info listed in original thread for anyone interested.

 

Just kidding, It's not in the dumpster, it's sitting on my garage shelf gatherin dust. Maybe somebody will want it.

 

I've personally seen a K&N suck full grains of sand through it..

If you are mainly on road, it's probably fine, but use your truck in dusty conditions and I'd suggest checking into it a bit..

 

K&N has been on my gas vehicles for years with no problems, but they don't suck in the air it takes to boost 45 lbs either. Put a K&N on my 05 before I knew better. 5k miles and it was still clean. Took the filter off and sure enough there was dirt in the tube. Switched to AFE PG 7 and no more problems. As far as websites go, I can say anything I want on a website. That doesn't mean it's true. I continue to run K&N on two trucks I own, but there will NEVER be one on a diesel I own. Just my .02.

 

I think this is one of the biggest debates I have seen. I had k&n on my powerstroke, I cleaned and oiled it every 3000 miles when I changed oil and the fuel filter everytime. I had no problems with the engine what so ever, with 97k when I got rid of it. I personally have had no problems but a lot of people have, so it is a use at your own risk product, good for some bad for others its a personal opinion

 

I think that there is a big difference in the amount of boost you are running in relation to how well it filters. A powerstroke does not boost what a 3rd gen cummins does. 1st and 2nd gen cummins do not boost what 3rd gen do.