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
    Great product

    Posted by Tim on Nov 21st 2020

    This was a great purchase. No more issue with plastic fuel filter caps.
    Also bought the degas cap. Works great and compliments the fuel filter cap.
    Hopefully one if these days riff raff will get more oil caps made so I can have all the caps be quality.

  • 5
    Fuel Bowl Cap

    Posted by David Hunt on Sep 20th 2020

    Great product , dresses up the engine , looks fantastic

  • 5
    Heavy duty cap

    Posted by Jon on Sep 2nd 2020

    Beautiful machining on this piece and perfect fit. This cap is a luxury item, but it's the last one you'll ever need for your truck.

  • 5
    Perfect fit and finish!

    Posted by Jared Baker on Jun 17th 2020

    Amazing quality product! Looks absolutely amazing! (36mm socket required)

  • 5
    7.3 Fuel Bowl Cap

    Posted by Thomas on May 13th 2020

    Great looking and very well made cap for your 7.3 fuel bowl that lets you continue to use the best Motorcraft fuel filters. Really looks good in the engine bay

  • 5

    Posted by Kurt Dorthe on May 6th 2020

    Fits perfectly. Very solid. And it looks great. I have blue sinister charge pipes coming that will match the blue on this. Great product

  • 5

    Posted by Jason C. on Apr 23rd 2020

    This is an item of beauty. Not really needed but was a splurge purchase and I’ll never have to worry about fighting with the stock cap without the proper wrench again. I got the black version because I like my stuff subtle. This thing should last a lifetime. Another high quality part from Riffraff.

  • 5
    Fuel Bowl Cap

    Posted by Myles on Apr 12th 2020

    Nice piece of machine work, very high quality. Fixed the leaking fuel bowl cap problem I've had in the past, one note, you will need a 36mm socket to fit the nut on the top to tighten it down.

  • 5

    Posted by Tyler S. on Jan 28th 2020

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