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 OEM 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

    Posted by Tyler S. on Jan 28th 2020

    Fit great. Screwed on by hand. No leaks. The green looks awesome.

  • 5
    Billet Fuel Bowl Cap

    Posted by Bill Robinson on Jan 17th 2020

    Works great, looks great and now I just need a $19 OEM filter so in time this will save me some money, thanks guys.

  • 5
    Love it, and fits correctly.

    Posted by James Stone on Dec 24th 2019

    Beautiful edition don't break anytime soon like the plastic ones. You can't live without this!

  • 5
    Looks awesome!

    Posted by Robert Zimpel on Dec 8th 2019

    Awesome well built product that fit perfectly and the red color looks awesome! Looks awesome the the red oil filler cap and degas tank cap.

  • 5
    Looks good and doesn't leak

    Posted by Tj on Dec 6th 2019

    Does the job like a fuel bowl cap should. The plastic OEM junk can stay out of the engine bay now. The O-ring is a bit tough to make sure it is put in the correct position but it only took one try.

  • 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.