Riffraff Diesel 6637 Replacement Filter

Part Number:
RDPFILTER

Manufacturer:

$67.11
$48.64
(You save $18.47 )

Riffraff Diesel 6637 Replacement Intake Filter for Ford 7.3L 94-03

We suggest buying them in quantities of 2 as your shipping won't increase much and you will save money.

100% Made in USA

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  • 5
    Air filter

    Posted by Unknown on Jul 23rd 2021

    Worked great best price I found

  • 5
    Badass Filter

    Posted by Abraham on Jun 27th 2021

    I know you're thinking will paper filter really be worth it? Guess what it is, throttle response difference is immense. I bought one for both a 2002 and 95 Powerstrokes and both showed amazing results. Riffraff coming in clutch as always!

  • 5
    Want your 7.3 to breathe?

    Posted by Jason Downing on May 16th 2021

    I was very Hesitant to install this since I have had nothing but good things with the stock air box. My friend has the same year 94.5 and said he could feel and hear the difference so I had to try it out. Went out and got a 45 degree bent black PVC adapter from The hardware store to match up with the stock intake tube and fit perfect. I can feel the difference in throttle response and my whicked wheel sounds amazing. It’s a must to let your 7.3 breathe. Shipping is always fast and Reliable. Thank you riffraff!

  • 5
    Work great

    Posted by Al Laughlin on Mar 25th 2021

    Great product

  • 5
    Perfect filter option for 7.3.

    Posted by The desert moose on Feb 13th 2021

    Fits perfect. Switch to this filter couple years ago with pre filter cover. Love it works great.

  • 5
    6637 Donaldson air filter

    Posted by Ben on Dec 22nd 2020

    This is about the best price I have found for this filter. Napa is twice the price. It is also a good upgrade from stock with better flow and better protection than the oiled K&N garbage.

  • 4
    Air Filter

    Posted by David E Harris on Sep 27th 2020

    Very quick service

  • 5
    Best Price

    Posted by Sam Edwards on Sep 27th 2020

    I have run these Donaldsons for almost 10 years now, and this is by far the best price I can find on them. Had tracking in 2 hours of ordering. Keep up the good work.

  • 5
    Filter

    Posted by Jeff Long on Sep 26th 2020

    Great product is as described and works flawlessly.