Riffraff Diesel Billet Oil Fill Cap 94-101
Upgrade the factory oil fill cap with a CNC-machined billet aluminum cap from Riffraff Diesel. Designed to add strength, durability, and a clean custom appearance to your engine bay while retaining the factory-style sealing function. Each cap is machined from USA-made 6061-T6 billet aluminum and anodized in your choice of color for a durable, long-lasting finish. A genuine Motorcraft oil fill cap is incorporated for proper OEM fit and sealing.
Features:
- 100% Made in the USA
- Motorcraft Cap Included for OEM Seal and Fit
- 6061 Billet Aluminum Construction
- Anodized for a Custom, Long Lasting Appearance
*Note: Anodized Color on Aluminum can be discolored / damaged by chemical engine cleaners. Use only soap and water to clean.

34 Reviews Hide Reviews Show Reviews
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Awesome colors
I got a Red and a blue for each of my trucks. I can't believe how deep and rich the color is on these. Great piece of american made billet aluminum and I am proud to have it on my power stroke.
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Nice Addition
ordered to replace my worn oem cap and to match my RiffRaff billet degas cap.
I think I would have preferred just the RR logo rather than words printed, but not a big deal. They are still great either way.
These utilize the oem cap adding a nice billet shell. Great item if you want to add some color to the engine compartment -
Compliments fuel bowl cap
Now while it is just a machined cover for a stock oil cap it compliments the fuel bowl cap quite nicely
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Merica'
Really great machining and the blue anodizing looks great. Easy install, no leaks. I recommend them to anyone with an OBS truck.
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A must !
5 stars .
Looks and fits great !
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Not Surprised
Another great product from RiffRaff. Thanks Clay!
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Awesome Quality!
I debated for days which color to get. I went with red and am super happy with it!






