Riffraff Diesel Coolant Filtration System / Filter Kit 99-03

Part Number:


$119.52 - $129.52

The Riffraff Diesel coolant filtration system for the Ford 7.3L Powerstroke filters a small amount of coolant with each pass. The Donaldson spin on the filter makes it easy and inexpensive to change coolant as often as you need. Plus, the filters also remove all solid particles. Typically you will use three filters in the first nine months. Once the initial nine months has passed, you will only need to change the filter once a year.


  • 1 Donaldson Coolant Filter
  • Billet Aluminum & Anodized Coolant Filter Assembly
  • Made in the USA Coolant Hoses with Nickle Plated Fittings
  • All Hose Clamps & Hardware for Installation
  • Installation Instructions
  • 100% Made In The USA


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  • 5
    Great quality throughout

    Posted by Blue Boosted F250 on Nov 25th 2019

    Install was very smooth. All items are great quality. Install instructions say basic hand tools but my truck had a 5/16" square drain/pipe plug. Unable to find a socket for it, I ground down a cheap 3/8" extension to remove the plug.

  • 5

    Posted by Chris Messmer on Sep 16th 2019

    For some reason I had been led to believe that it might be a tight fit in my 2003 7.3l F250 with a Ford AIS and the "outside-the-belt" upper radiator hose, but it all fit perfectly and looks like has always belonged there. I like the fit and finish of every part in this kit and the purpose-built radiator bracket replacement (serving triple duty) that I found in no other kit. Well done !!

  • 5

    Posted by Diesel Dave on Jul 28th 2019

    Kit installs easily, adds filtration to the cooling system, same as the semi trucks. I installed this to help increase the longevity of my 7.3

  • 5
    Complete Kit

    Posted by John on Jul 2nd 2019

    Great kit, had everything I needed to install. Impressive quality on the hoses and fittings.

  • 5
    Awesome product as always. Tight fit with upper radiator hose being around the belt. But works perfectly.

    Posted by Benjamin Holcomb on Jun 23rd 2019

    A+ would recomend

  • 4
    Coolant filter kit

    Posted by Chris on Feb 17th 2019

    Would have been 5 stars but the pre-made lines that come with the kit are a pain to install. The reason they are a pain is because the fittings on the lines do not rotate and make install onto the filter housing difficult.

  • 5
    Beautifully made.

    Posted by Bill on Feb 2nd 2019

    Fits and looks fantastic. Very easy to install and everything fit perfect.

  • 5
    Coolant filtration system

    Posted by DEREK on Dec 18th 2018

    Easy install just watch your hose routing near the serpentine belt.

  • 5
    Great add on

    Posted by Jon H on Dec 8th 2018

    First off the quality of this product is great! I was doing a coolant flush do to a bunch of junk in my system so I figured this would keep it clean. Everything is included in this kit right down to the thread sealant. If you are unsure how to install it, there is instructions you can look up on this page. The hardest part of the install is getting the old plug out of the water pump housing. The hoses do not have swivel ends on them so I ended up threading the water pump hose end in first, then to the filter base then mounted it to the truck. The other hose ties into the degas bottle hose so I first threaded into the base and lined up the T with the hose on the other end. After a week installed everything is holding up great. Be sure to get plenty of spare filters and change often to start.