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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2002 f350 powerstroke 4x4
I love your product the truck breathes so much better
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Easy to install
Used this to replace my stock filter that was tripping the filter minder. Relocated the filter minder and IAT to the filter. Engines feels like it breathes easier.
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Looks great
Great product and would recommend to others
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Tornado.
My Turbo has always screamed, but now, even at idle, you can hear it from the inside of my house. My favorite part is actually hearing the air enter the filter, I now know to steer clear of any children, as they might also be sucked into the filter. I love it, really opened up the ole' 97 at 2000rpms.
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mass air
sounds cool at about 10 pounds of boost when pulling a load .
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Fits perfect
It fit perfect. It was easy install.
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great product
love the quality and performance , but the instructions were for the wrong year truck
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Can't beat price and performance
Have a 2000 psd with muffler delete and edge 15000. Before I added the edge I installed this filter With the muffler delete ( 3.5 inch stock exhaust ) really improved throttle response as well as over all power. Seems like it gets down the road a lot easier. Added turbo noise as far as the whistle goes and sounds excellent. Easily installed. 10 mins. Recommend trimming the battery box for better fit. Professional look when finished.
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The way to go
This is the way to go if you're doing the 6637 kit. Best value I've found out there for the pieces included and having the engineered pipe with the angle in let's the filter lay down nicely without it binding anywhere.






