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
    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.

  • 5
    Well worth the money

    Posted by Must HAVE on Mar 14th 2022

    These are a must have. You really have no idea what you are missing. I coupled these with the FRX and what a difference. The truck accelerates much smoother, throttle response is much improved and it’s even Quieter at cruise speeds. I would HIGHLY recommend this

  • 5
    Great upgrade!!!

    Posted by Anthony Ciampa on Feb 28th 2022

    A little tricky to install but we'll worth the time and effort!! Keep up the good work Riff Raff!!!

  • 5
    SS braided fuel feed line

    Posted by Greg Mitchell on Feb 27th 2022

    Installation was straightforward, kit was complete with everything needed. Lines were plenty long enough. I took the turbo off for better access. Engine runs smoother and seems to have a little more power.

  • 5
    Awesome lines

    Posted by Benjaman on Feb 20th 2022

    Great product, reasonable install, replaced aging stock lines in an unsuccessful attempt at chasing a fuel leak most likely coming from the trash can of a fuel bowl…again…RiffRaff makes some quality parts for the 7.3, now they need to come up with a fuel bowl delete that utilizes the Frx and these braided lines thanks for coming to my Ted talk

  • 5
    Fuel Feed Lines

    Posted by Robert on Feb 3rd 2022

    As I have come to expect from Riffraff, nothing short of a perfect fit, these lines are far superior to OEM steel lines and poorly engineered seals, Again Clay and his engineering performance is a cut above, Im convinced, Riffraff is my soul source for all my 7.3 upgrades and needs, Im going back for Injectors and wiring harness upgrade, and Im sure a slue of other upgrades, Riffraff has my total confidence, Clay knows his stuff, call him and get the straight information on his vast knowledge base. Thanks Clay for all your expert input

  • 5
    SS fuel lines

    Posted by Codi Mannering on Jan 19th 2022

    All around great product over the stock steel lines. Mounted up decent but only suggestion I’d make is the passenger side line should be 2” longer. Other then that another great RIffRaff product

  • 5
    Quality Kit

    Posted by Jerry Reese on Jan 15th 2022

    This is a very nice quality kit. The lines are perfect length and everything you need is included so you can upgrade your stock lines and get rid of the check valve fittings.