Riffraff Diesel 7.3L Fuel Bowl Cap 99-03
Features:
- 100% Made in the USA
- Upgraded Viton® fuel bowl cap seal
- 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: Anodized Color on Aluminum can be discolored / damaged by chemical engine cleaners. Use only soap and water to clean.

66 Reviews Hide Reviews Show Reviews
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Riffraff Diesel Billet 7.3L Fuel Bowl Cap 99-03
Best thing ever made. Anyone that owns a 7.3 needs one of these. It fit perfect and stopped the fuel leak immediately.
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Fuel bowl.
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.
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Great Cap, Mediocre Finish
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.
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Fuel Bowl cap
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.
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Fuel bowl cap
Awesome product! Is there anything else to say!
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7.3l fuel bowl
Excellent quality product and service as well. God Bless You!
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As usual
Looks and fits awesome !
Now let's get the other such everything else under the hood to match ! -
Billett fuel bowl cap
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
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Fuel bowl cap
I was having continued problems with the plastic fuel filter and caps leaking and coming loose and I tryed basically every trick in the book trying to fix the problem short of buying a fuel bowl delete. So I figured I would take a swing at this fuel bowl cap and I was not dissapointed. Just holding this cap in your hand you can tell it was made to the highest quality and precision and I was delightfully surprised. It fit perfectly and was easy to get tight even just by hand. I've had it installed on the truck for around 1500 miles worth of driving plus quite a few hours and haven't had any leaks yet.






