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
  • Nickel Plated Ball Valves
  • 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 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.

  • 5
    Great Product

    Posted by Unknown on Sep 5th 2018

    Impressed with the quality of the hoses compared to other kits of similar price. The hose with the "T" at the end was delivered slightly damaged(part of the T was crushed), I received a replacement shortly after with no problems at all. No leaks on first try. Flushed system with Rotella ELC after I bought the truck, looking forward to the added protection.

  • 5
    Works Great

    Posted by Andrew on Aug 27th 2018

    Everything works like it should. Very happy!

  • 4
    Good quality but I made a modification to ease future cooling system maintenance

    Posted by Allen C. on Aug 16th 2018

    Great product. I offer a couple of tips from my install.

    First, you really must crank the NPT shutoff valve fittings much farther into the filter head than feels right and use plenty of thread sealer or eventually they will leak. They must stop turning/bottom out when using a fair (not gorilla) amount of tightening force before they will properly seal.

    Second, I opted to use a length of heater hose clamped to two standard beaded hose fittings (not barbed fittings) threaded into the female NPT outlet in the thermostat housing neck and the shutoff valve inlet entering the filter head. This allows the hose to be easily removed and replaced at either the water pump outlet and/or filter head without having to disturb any NPT fittings in the process. Seemed to make sense since NPT fittings don't necessarily like to be removed and retorqued.

  • 5
    Quick and easy install..

    Posted by Art S. on Jul 12th 2018

    While I was flushing my radiator to change the coolant I found there was alot of sediment floating around in the radiator. This kit went on quick and easy with no surprises. Another high quality product.

  • 5
    Good Product

    Posted by FastEddie on Jul 10th 2018

    Everything they make is AWESOME!! Quality is TOP NOTCH! 1 thing I love is how clear “MADE IN THE USA” is written. Just pure FANTASTIC!

  • 5
    Coolant filter

    Posted by Unknown on Jun 10th 2018

    High quality

  • 4
    Only one issue

    Posted by Ryan on May 16th 2018

    Overall nice kit. The only issue I have is that the line from the water pump to the filter housing is a pain to hook up. A swivel would really help make this a five star product. Other than that, very great product.

  • 5
    Quality Parts

    Posted by Unknown on Apr 3rd 2018

    Easy to install and has everything you need. Another quality product from Riffraff! One improvement would be to have the side of the hose that runs to the water pump be able to swivel to make installation easier.