Fuel Feed Line SS Braided Hose Kit - 7.3L 99-03

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Riffraff Diesel Fuel Feed Line SS Braided Hose Kit - 7.3L 99-03

Our new feed line kit utilizes Eaton Aeroquip® 304 Stainless Steel Braided lines covered with a groundbreaking protective layer of HYTREL® from DuPont to replace your worn and restrictive OEM hard lines that run from the fuel bowl to the driver and passenger side heads. This allows you to move from the problematic stock Vibra-Loc® sleeves to a leak proof JIC adapter for long term security against the possibility of a leak. 

Our SS Braided Fuel Line Kit also solves the issue of pedestal interference on the OEM passenger side metal hardline when you convert to a T4 Turbo kit. This kit covers the fuel lines from your 1999-2003 7.3L Fuel Bowl to the fuel rail in the cylinder heads. 

Made in the USA

Installation Note - Do Not over-tighten the 90º elbow that is installed into the fuel bowl. It is a tapered thread, and if over tightened can crack the fuel bowl.


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  • 5
    Worth it

    Posted by Unknown on Nov 28th 2022

    Well worth the price and work to install. Far superior to stock lines, and got rid of all my leaks.

  • 5
    Fuel lines

    Posted by Brandt on Nov 14th 2022

    Great product

  • 4
    Steel braided fuel lines

    Posted by Darin on Oct 31st 2022

    Awesome product.

  • 5
    Fixed my leaks

    Posted by Blake on Oct 18th 2022

    Great kit to replace the stock metal lines. Mine were leaking so I went with these upgraded lines. Fit perfect, and look very nice as well. Glad to be leak free.

  • 5
    Quality Kit

    Posted by Jason Schuler on Sep 26th 2022

    I was able to install this easily, and it fit like factory.

  • 5
    Quality parts

    Posted by Tony Biddle on Aug 7th 2022

    Riffraff really stepped their game up with professional packaging, I am very impressed! Truck starts faster and runs smoother with these lines installed, and check valves removed. I installed the long one on the passenger side and the short one up and over the fuel bowl, i couldnt make the short line work on the passenger side, other than that, great kit!

  • 5
    Great product

    Posted by Jason on Jul 8th 2022

    As many of the other reviews have said the quality is top notch. A few tips for installation:
    To remove passenger head fitting you do not need to remove turbo spider, just remove passenger intercooler pipe, remove the engine lift bracket and you will have plenty of room. Next take a pair of heavy duty cable cutters and cut the old fuel line as close to the fitting as possible, then you can use a 15mm deep well socket ( mine was a 12 point) to slide over the compression fitting AND check valve at the same time and remove the whole assembly at one time. Install new fitting by hand and tighten with appropriate socket, next use 1/4 drive ratchet , 1/4 to 3/8 adapter to a crows foot ( 9/16? Can't remember) to tighten the fuel line to head fitting. The driver head fitting it's best to loosen/ remove the alternator/ power steering pump bracket to gain access. It's only 4 bolts, I was able to just loosen the bracket but depending on what tools you have to get to the head fitting you might need to remove the bracket.

  • 5
    SS fuel line kit

    Posted by Michael P on Apr 26th 2022

    High quality product, great fit, would buy the product again. Thanks for producing great parts for the 7.3.

  • 5
    Braided Line Upgrade

    Posted by Kadin on Mar 14th 2022

    My original factory steel lines were leaking at the fittings. Rather than replace the o-rings i opted to upgrade to this kit. Much higher flow no o-rings to fail the kit was fairly simple to install. Took me a good couple hours but was worth it. No more leaks.