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Riffraff Diesel Performance Inc, Engines - Supplies, Equipment & Parts, Eagle Point, OR


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Riffraff Diesel 6637 Filter Kit

  • Late 99.5-03 Kit
  • 94-Early 99 Kit
  • Donaldson Standard Cellulose
  • Donaldson Blue® Filter
  • AFe Big Boost Filter
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 
- 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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Product Reviews

Showing reviews 1-10 of 250 | Next

  1. Great product 5 Star Review

    Posted by on Nov 15th 2017

    Easy install fast shipping great company to buy from. I will buy more from them in the future.

  2. Noticable difference 5 Star Review

    Posted by on Nov 5th 2017

    Turbo is finally getting the needed air! Money well spent.

  3. Best mod for these trucks 5 Star Review

    Posted by on Nov 4th 2017

    This is the easiest and best mod you can do to these trucks. It is something that wakes them up. I love the sound of these filters and how efficient they are. The stock unit on my 02 Ex was full of dirt and filter would not stay clean. This filter keeps the truck breathing and stays fresh and clean. It is a must also with this pricing.

  4. Awsome 5 Star Review

    Posted by on Nov 1st 2017

    I bought this kit to replace a kn filter that was on my truck when I bought it. What an upgrade !! I tell all my friends where to buy this kit. I definately will buy from you again, great shipping to considering I live on the East Coast. Simple to install to.

  5. Wow 5 Star Review

    Posted by on Oct 16th 2017

    Never thought a drop in air filter would make such a drastic difference. Turbo is much more audible now and there's a noticeable increase in throttle response... doesn't seem like it's gasping for air anymore. Had a K&N in the stock air box before this, and that's the last time it'll ever be in there.

  6. Great buy 4 Star Review

    Posted by on Oct 4th 2017

    So it took a little more modification to instal than I expected. I had to pull the battery box out and trim all of the unneeded stock box to get the new filter to sit under the hood right. That being said I've noticed a significant decrease in EGTS and fuel economy has risen. I will say as well that you WILL notice more noise from the turbo. Not a bad thing for me. I have dealt with Riffraff on several occasions and am always impressed with speed and knowledge.

  7. Quick and Easy Install 5 Star Review

    Posted by on Sep 29th 2017

    Easy installation and fit right in airbag area. Took a couple try to get it just right so the hood would close without hitting. Otherwise it's the perfect replacement filter.

  8. Great product 5 Star Review

    Posted by on Sep 10th 2017

    Easy to install and looks good

  9. Doesn't get any easier 5 Star Review

    Posted by on Aug 29th 2017

    I read that the factory air box does a crap job of filter rust and dirt and that it's a killer on the turbo and worst the engine. I did a lot of research on filters and this set up came highly recommended. Install was a breeze.

  10. Great 5 Star Review

    Posted by on Aug 21st 2017

    Truck runs cooler, much easier to replace, and looks as good as it functions

Showing reviews 1-10 of 250 | Next