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 $29)
- Powder Coated Adapter Tube
- 94-Early 99 Uses a 45* Mandrel Bent Tube
- Late 99-03 Uses a straight Tube
- SS T-Bolt Clamp
Late 1999-2003 Powerstroke production date 12-7-1998 and after
462 Reviews Hide Reviews Show Reviews
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Quality
Filter and cover are nice, but would've been nice to have more then 1 hose clamp I had to order the other hose clamp elsewhere.
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6637 Filter Kit
Perfect fit and excellent function! Top quality materials. Riffraff for the win once again.
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Big filter kit OBS 7.3
Looks good and breaths real easy I deal it’s way cheaper than the fancy high flow intake systems with the same or better flow for less$ . Shipping was fast riffraff always delivers fast with great products. Thanks
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6637 filter kit
Best kit out there!! Will never go with anything other than this kit.
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Great filter setup
PO had used OEM filter and box for 235k mi. The pipes were actually clean and turbo fins were in great shape, but he was a careful guy. This is the best setup though, hands down.
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Air filter
Hands down one of the best upgrades you can do with your 7.3 powerstroke thanks again RiffRaff Diesel performance!
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Filter kit
Should've bought this long ago. Now the filter isn't pressing up against the brake components or anything. Lays in the filter area nice and proper.
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6637 filter kit
Everything fit well and a quality USA made product
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Intake
Fits perfect, looks really good. Way better than the stock intake box. Doesn't make the turbo much louder but still awesome.
