Riffraff Diesel Billet 7.3L Fuel Bowl Cap 99-03

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Riffraff Diesel 7.3L Fuel Bowl Cap 99-03


  • 100% Made in the USA
  • 6061 Billet Aluminum Construction
  • Anodized for a Custom, Long Lasting Appearance
  • -4 ORB Port Plug with Dupont® Viton Oring for pressure sampling
  • Designed to fit the superior filtration of the Motorcraft® Filter

*Note - An o-ring is not included with purchase of the cap, but is included with the fuel filter (Sold Separately)

*Note: Anodized Color on Aluminum can be discolored / damaged by chemical engine cleaners. Use only soap and water to clean.

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  • 5
    Permanent solution!

    Posted by Unknown on Sep 5th 2019

    It's fantastic! You can actually hand-tight this lid if you snug it down at the end with both hands! Ran my truck and no leaks. You won't regret getting this!

  • 5
    Riffraff Diesel Billet 7.3L Fuel Bowl Cap 99-03

    Posted by James on Apr 24th 2019

    Best thing ever made. Anyone that owns a 7.3 needs one of these. It fit perfect and stopped the fuel leak immediately.

  • 5
    Fuel bowl.

    Posted by Joe on Jan 28th 2019

    I installed this while doing another modification in the fuel bowl, and this thing not only works if looks badass. Earlier I put in the HPX and I only kind of noticed a difference, I just removed the spring and plunger located inside the stem inside the fuel bowl and between those two the truck has a significant more punch. I did have to take off the engine cover and the engine cover bracket for this fuel bowl covers to fit, but that's okay, this looks better than having the engine cover anyway, good job on this one, eventually I'll get the oil cover.

  • 3
    Great Cap, Mediocre Finish

    Posted by Paul Baker on Jan 7th 2019

    The cap is solid and well constructed. This would be a five star review, however my cap came with what appear to be black burn marks on the top, along with very noticeable swirl marks. For the price, I would have expected the finish to be clean. I have purchased quite a few items from here and this has been my only issue thus far. Maybe I was sent a factory second or something. I waited 2 weeks for it to arrive, so I didn't feel like going thru the hassle of returning it, but I would not buy again for the purchase price. I purchased many anodized billet items for many vehicles and none of them had finish flaws like this cap.

  • 5
    Fuel Bowl cap

    Posted by Michael Anderson on Dec 30th 2018

    I have waited for some one to make a billet fuel bowl cap for the super duty! What a fine piece. I could not believe it took this long to make something to replace the plastic cap on the 7.3. Thumbs up on a great job guys.

  • 5
    Fuel bowl cap

    Posted by Charles on Dec 17th 2018

    Awesome product! Is there anything else to say!

  • 5
    7.3l fuel bowl

    Posted by Osvaldo on Dec 16th 2018

    Excellent quality product and service as well. God Bless You!

  • 5
    As usual

    Posted by Mongus on Dec 14th 2018

    Looks and fits awesome !

    Now let's get the other such everything else under the hood to match !

  • 5
    Billett fuel bowl cap

    Posted by William Evans on Nov 27th 2018

    Thanks Clay, i have been looking for one of these for a long time in order to make a quick change fuel pressure tester. The tapped hole is perfect for the 7.3 fuel bowl fitting . It arrived today and I immediately put it to the test, perfect fit, heavy duty, well machined. As a plus now I have a spare fuel bowl cap just in case. KUDOS