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
468 Reviews Hide Reviews Show Reviews
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Good filter
No complaints about the filter, bit of a pain in the ass to drive the adapter tube into it, but nothing a deadbolt doest solve.
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6637 filter kit
Super EZ install
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6637 Filter Kit
Highly recommend. Much better turbo spool and performance. Took longer to get the stock air box out than it did to install the filter. 10 minutes total.
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The difference it does!
So I’ve had all types of filters on my truck from k&n to others. But wow!!!! This air filter is perfect this filter pulls so much air!!! My truck can finally breath.
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Riffraff filter kit
Awesome kit! Noticeable difference
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6637 filter kit
great buy
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Sounds Good
whole install took about 1 beer. I bought the donaldson blue filter. did not bother with the dust sock. dont see much gravel. First drive with it on sounds like you have blown an intake boot. (really hear the air moving.) noticed alot less lugging on the engine going up hills on the highway in over drive. all and all impressed. will buy again when this one is dirty.
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6637 filter kit
Fits very well and is an excellent replacment for my old damaged stock airbox. Would recommend to others.
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So far, so good
Easy install. Time will tell if performance improves from the K&N I had previously on my F250 7.3.
