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 $29)
- Filter Adapter Tube
- 94-Early 99 Uses a 45* Tube
- Late 99-03 Uses a straight Tube
- SS T-Bolt Clamp
Late 1999-2003 Powerstroke production date 12-7-1998 and after
470 Reviews Hide Reviews Show Reviews
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5 6637 Filter Kit
Posted by Jim Chrisawn on May 29th 2023
Perfect fit and excellent function! Top quality materials. Riffraff for the win once again.
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5 Big filter kit OBS 7.3
Posted by Josh on May 25th 2023
Looks good and breaths real easy I deal it’s way cheaper than the fancy high flow intake systems with the same or better flow for less$ . Shipping was fast riffraff always delivers fast with great products. Thanks
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5 6637 filter kit
Posted by Samantha on May 19th 2023
Best kit out there!! Will never go with anything other than this kit.
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5 Great filter setup
Posted by Jason M. on May 15th 2023
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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5 Air filter
Posted by Kyle Eastman on Mar 7th 2023
Hands down one of the best upgrades you can do with your 7.3 powerstroke thanks again RiffRaff Diesel performance!
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5 Filter kit
Posted by Daniel on Mar 7th 2023
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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5 6637 filter kit
Posted by Randy on Feb 28th 2023
Everything fit well and a quality USA made product
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5 Intake
Posted by Conner Allen on Jan 14th 2023
Fits perfect, looks really good. Way better than the stock intake box. Doesn't make the turbo much louder but still awesome.
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5 Air filter
Posted by Jay on Dec 29th 2022
Oh WOW what a difference night and day. Still a stock truck. Feels like the truck is breathing very well. Next exhaust
