Riffraff Diesel 6637 Filter Kit

Part Number:



Riffraff Diesel 6637 7.3L Intake Filter Kit

This kit contains: 

- Donaldson 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


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  • 5
    Great kit

    Posted by Victor on Dec 28th 2019

    Easy install, went right in on my 2002 7.3 just had to cut the airbag away from the battery bottom. Took about 20-30 mins start to finish. She is breathing nice and easy now!

  • 5
    Awesome! Def worth it!!

    Posted by Alfonso H on Dec 28th 2019

    Worth every penny, best bang for your buck!
    AFE big boost filter
    5 min install

  • 4
    Great product

    Posted by Jake T on Dec 25th 2019

    Tight fit but worked great

  • 4
    Air intake

    Posted by David Helems on Dec 10th 2019

    Easy instillation and turbo sounds a bit better.

  • 5
    Definitely worth it

    Posted by Noah on Nov 11th 2019

    It looks good, sounds good, and even made the truck feel like it had a little bit more power. Had to trim the factory air box to make it fit the way I wanted it too, but looks and functions really well.

  • 5

    Posted by Tyler on Oct 22nd 2019

    Great product, great packaging, fast shipping. Filter looks great and installed easily, nice finish on the tube. and nice clamp, would recommend!

  • 5
    Filter kit

    Posted by John O. on Oct 2nd 2019

    Easy to install and great components! KISS

  • 5
    Donaldson 6637

    Posted by Glenn coker on Sep 26th 2019

    This is a great kit for the money. Removed stock airbox,bolts right in.

  • 5
    Improved performance

    Posted by Tyler on Sep 11th 2019

    I bought the donaldson blue with early 99 elbow, over stock this kit performs fantastic and lets the truck breathe. Strongly recommend.