This product was just what I wanted. It did not take that long to get here every thing went well.

Riffraffs 6637 air filter kit is the best bang for your buck hands down. I bought their full kit for my 99 7.3 ford and it was a breeze to install. I also purchased the filter and cover for my 2nd gen Cummins diesel and it made a very noticeable difference. I wouldn't hesitate to install this filter on any diesel in the future.

I put this filter on my 6.0 and it works great! I just bought a long 3" 90 degree pvc pipe and a ring clamp and clamped on end to the filter and the other to the rubber hose on my intake. it was a tight fit but I love it and plan to get the washable one soon. cant beat the flow and value.

I don't have to worry sand blasting my turbo any more. Very easy to install. The best customer service ever.

Product is high quality and very fast shipping. Great business and great guy. Recommend for anything u need. Have ordered a few times now and its always this way.

Love this air cleaner ! Did a DIY intake on my diesel 7.3. Can't beat the price anywhere ! Works awesome

Good improvement over the stock air box that will crack on the ford 7.3. and get a billet compressor wheel as well.

Great filter. My truck runs like a raped ape with this bad boy. I've been buying this filter from Riffraff for 3 years. The lowest price I've been able to find period. I usually order 2 at a time to save on shipping. Sweet filter at a sweet Price.

I like this system a lot, it really helps the big girl catch her breath. Clay is the best and the CHEAPEST price you'll find. My Napa wants somewhere around $70 for this same filter. Thanks, I will definately be using you again in the future.