Riffraff Diesel 6637 Filter Kit

Part Number:
RDP6637

Manufacturer:

$89.00
(475 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

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1994-Early 1999 Powerstroke production date 12-7-1998 and before
Late 1999-2003 Powerstroke production date 12-7-1998 and after
Write a Review

475 Reviews Hide Reviews Show Reviews

  • 5
    great product, fast shipping

    Posted by Lane H on Mar 9th 2016

    Great quality product. Pulling bigger boost numbers and truck seems to run much better. Thanks

  • 4
    Nice mod

    Posted by Unknown on Feb 21st 2016

    Pretty good. Way bigger filter, so it's gotta breathe better.

  • 5
    6637 filter kit for obs 7.3l

    Posted by Korey on Feb 21st 2016

    I bought a 6637 filter kit for my obs. Came with a heavy duty 45* adapter piece and the blue prefilter that I choose. Everything was packaged nice and I liked the kit +price so much ordered another for my 550 7.3l super duty. Thanks for the awesome product

  • 5
    Love it

    Posted by Unknown on Feb 3rd 2016

    Easy to install and super loud. Love the sound of the turbo

  • 5
    Great improvement, good quality

    Posted by Ben on Jan 30th 2016

    Installed in 20 minutes, good high quality products and provides great air flow. Highly recommend

  • 5
    Great Product

    Posted by Mark on Jan 27th 2016

    The product works as it should. Very satisfied. Turbo sounds great.

  • 5
    Awesome Kit.

    Posted by John I. on Jan 25th 2016

    Exactly as advertised. Quality. Heavy duty filter, heavy duty 4" pipe, heavy duty clamp.
    Great investment.

  • 5
    Great Product

    Posted by Chris on Jan 16th 2016

    It fit well and was easy to install. The directions were great!! Still waiting to see what kind of mileage increase I get.

  • 5
    Fit perfectly with E99 kit

    Posted by Unknown on Jan 15th 2016

    Everything went together perfect and it looks great with the cover!