Riffraff Diesel 6637 7.3L Intake Filter Kit
This kit contains:
- Riffraff Diesel 6637 Filter
- Optional AFe Big Boost washable, or a Donaldson Blue® Filters
- Custom "Riffraff Diesel" Pre-filter Cover (Optional $29)
- Filter Adapter Tube
- 94-Early 99 Uses a 45* Tube
- Late 99-03 Uses a straight Tube
- SS T-Bolt Clamp
Late 1999-2003 Powerstroke production date 12-7-1998 and after
475 Reviews Hide Reviews Show Reviews
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Great filter, much larger than I expected!
Installed easily, fast shipping. Thanks Riffraff
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Great filter!!
Easy to install. Did some minor trimming to the battery box to make it fit better. Have not calculated mpg yet to see if there was any improvement.
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Great alternative filter set-up.
I found installing this filter kit very easy. I haven't really driven it far enough to give a performance report yet.
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Great air filter
Great filter and value. 2001 excursion 7.3. 4mpg increase more responsive.
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6637 Kit
The product install easy and looks great. You will have to trim your battery box or get rid of it. I also had to trim two inches off the black 4" adapter pipe on my 1999 Ford F350 7.3L.
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Just installed....good product
After some slight alterations and modifications it is in. Looks good. Just installed so no performance reviews just yet.
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This thing "sucks
I bought my 97 powerstroke with only a 5 inch exhaust and a stock intake. I put this on and I could instantly feel an increase in throttle response and all around better drivability. Well worth the $100
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Best CAI for the money
A++. Works great. Hear and feel the difference
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Quality stuff
Easy to install, looks good, quality material, midrange power improvement.
