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


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Regulated Fuel Return Kit w/ Integrated Fuel Filter 7.3L

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$699.00 (You save $133.00)
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Regulated Fuel Return Kit w/Integrated Fuel Filter 7.3L

The Sinister Diesel Regulated Fuel Return Kit is constructed of CNC machined billet aluminum parts and stainless steel braided fuel lines with nickel plated fittings. This kit comes with an adjustable regulator and fuel pressure gauge which allows the user to adjust pressure to keep a constant fuel pressure which will prolong the life of the injectors. This kit completely replaces the factory fuel filter bowl with the 10 Micron filter, allowing you to upgrade your system with high flow fuel lines (Filter to Engine) and a 6 micron canister style fuel filter that integrates right into your factory fuel lines that run the frame of your truck!!! The filter block mount utilizes a hinge system for easy fuel filter replacement while giving your engine a clean upgraded look. This system is a fully functional package and does not need any additional parts to work. 3/8" inch quick disconnect tool is required for installation.


  • Construction - Billet Aluminum and Stainless Steel
  • Product Design - CNC Precision Machined
  • Performance Notes - Better Filtration Efficiency 
  • Kit Includes - Six Micron Fuel Filter, Sinister Fuel Filter Block, All New High Flow Fuel Lines, Adjustable Fuel Regulator, Oil Filled Fuel Pressure Gauge, Retaining Clips, Protective Cover For Braided Lines
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Product Reviews

  1. %100 worth it! 5 Star Review

    Posted by on Mar 14th 2018

    I can’t believe the difference it makes in sound and performance. I didn’t realize how restricted the stock fuel system was. I was replacing injectors, turbo, and HPOP at the same time so had lots of room to work with which made it an easy install. As for installing the 45deg fittings a crows foot worked perfect on them. Didn’t have to loosen the up-pipes either. Hardest part for me was the Ford quick connect fuel lines under the truck...rusted supply line was so seized ended up braking tabs and had to cut the old line out. Canadian winter for yea tho eh. Also if you install this system with everything off the top like me, be very weary of how all your other wiring and hoses are going to mesh together with your new fuel lines. Overall well worth the money and time!

  2. First review 5 Star Review

    Posted by on Oct 13th 2017

    After about 9k spent with Riff Raff this is my first review. I felt that it was such a neat product I had to say something. Install took me about 12hrs but mainly because I had problems with the stock fuel lines being stuck and a couple of stripped bolts in the plenum. I also added the oil reservoir for the HPOP. That being said I would still like to see a different type of threaded adapter for the front left corner and the back right adapter. Its the solid one piece 45 degree type that only has two flat sides to grab. If you have the Riff Raff aluminum plenums you will not be able to thread the front left adapter unless you remove the plenum. The instructions call for the moving of the up-pipes in order to install the one at the rear. That being said, once installed, it is absolutely a quieter running truck, as well as more responsive bottom to top. No more "cackle". Driving down the highway, all I here is the turbo now. Love it. Nice touch also that they included plenty of hose wrap and the square pipe socket that is needed to remove the plugs. No mention of what I should do with the plug that used to go to the heater in the bottom of the fuel bowl...and not sure how the truck will react when its real cold.