Riffraff Diesel 6637 Filter Kit

Part Number:
RDP6637

Manufacturer:

$89.00

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
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  • 5
    Great Product

    Posted by Unknown on Jul 26th 2014

    Quick and easy install. Would agree with most other reviewers on being pricey and the cutting up the old air box for better fitment. But, its a modification, not a R&R. Overall its a great product.

  • 5
    Easy Install

    Posted by Zeth on Jul 20th 2014

    Slightly on the pricey side but the easy install and quality cant be beat. Took about 15 minutes to install and the turbo sounds great

  • 4
    Big Ass Filter

    Posted by Unknown on Jul 10th 2014

    over all love the product, wish I didn't have to cut up the stock battery box (tabs from the stock filter to install it.

  • 5
    great intake!!!!

    Posted by Unknown on Jun 29th 2014

    Very tight fit for 2002 f250 7.3 but other than that it's perfect

  • 5
    Good filter, good price!!

    Posted by Mike H. on Jun 26th 2014

    This filter made a noticeable improvement in my 97 F350 7.3L Powerstroke from the very first second I started the truck. For the price you can't beat it!!!

  • 5
    Great bang for the buck

    Posted by CJ on Jun 22nd 2014

    Mine is the early 99 version and I had to play with the angles of rubber snorkel to the 4" 45 degree piece to get correct fit.Used tune up silicone lube on air inlets to aid rotation. A little tight between battery and fuse box but fits well.

  • 5
    Great Deal, Great Product

    Posted by Jason from Baton Rouge, la. on Jun 17th 2014

    Product was very easy to install. The best of the best included in the set. I saw instant acceleration response. Will definitely be a return customer

  • 4
    Its alright

    Posted by Jon on Jun 12th 2014

    I purchased this because I read on multiple forums that this is a good replacement for the stock airbox. Not sure how true that is, but here is my review:
    Installation was a piece of cake; it took about 20 minutes. When I went on my first test drive I noticed take off from a dead stop was slightly improved. I have yet to do a hand calculated MPG test but I believe there maybe some improvements.. Will be doing one soon. Turbo whistle is slightly louder as well. Overall it was a good buy for just under $100 you get a filter, clamp, and a fashionable sock for the intake. 4/5 stars because fitment could have been slightly better. I had to wedge the filter in and it is a snug fit. I wish there was a box for it for even more filtration. I also wish this filter was made with water resistant material. Still earned 4/5 stars in ny book.

  • 5
    Super easy install

    Posted by Unknown on May 30th 2014

    Very easy to install once I got my factory air box out of my 96 Powerstroke. Can definitely tell a difference in the way the engine runs smoother. Gained almost 1 MPG as well. Would definitely recommend this kit to anyone!