Riffraff Diesel 6637 Filter Kit

Part Number:
RDP6637

Manufacturer:

$89.00
(468 reviews) Write a Review
99.5-03 Donaldson White 6637 Filter Kit

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

install.jpg

1994-Early 1999 Powerstroke production date 12-7-1998 and before
Late 1999-2003 Powerstroke production date 12-7-1998 and after
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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.

  • 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.

  • 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!

  • 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.

  • 5
    6637 filter kit

    Posted by Randy on Feb 28th 2023

    Everything fit well and a quality USA made product

  • 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.

  • 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

  • 4
    2001 7.3 intake filter kit.

    Posted by Sal on Dec 29th 2022

    Looks great, just a little tight against the fender.

  • 5
    Great Kit

    Posted by Brad K. on Nov 23rd 2022

    Installed this on my 2001 F-250 and threw that K&N filter I've been using for 20+ years in the garbage. The quality was good and took me about 15 minutes to install from opening the hood to closing it. I did go back the next day and make some adjustments because the filter was rubbing against the brake reservoir which caused the brake pedal to vibrate. I fixed this by trimming the plastic tabs the factory airbox bolts to and adjusted the filter so the *top is up against the fender. This gave me about an inch of clearance between the filter and brake boost reservoir.