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NB gas cap holder kit

NB gas cap holder kit

Exclusive to Flyin' Miata!

Regular price $14.99 USD
Regular price Sale price $14.99 USD
Sale Sold out
More expected on Jun 28, 2024.
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Filling up your car is really pretty easy, but there's one major annoyance - where did Mazda expect us to put the cap? Dangle it off that tail so it'll scratch the paint? Nope. It'll mostly fit next to the filler neck, but that's not exactly ideal. This is an easy solution to give you a perfect spot for it. It installs in the underside of the filler lid and gives you a perfect place the hold the filler cap - just give it a quick turn into place. As with all of our 3D-printed parts, this is printed out of Onyx, a carbon fiber infused nylon that's resistant to many things, including gasoline.

Despite the angled cut, it's very easy to thread the cap into this piece. This is because of how coarse the threads are. The angled cut is necessary for clearance. 

This will only fit factory fuel filler doors, it likely won't fit non-original fuel filler lids - if your fuel filler door is chrome, whether aftermarket or Mazda, this almost definitely won't fit. 

This is another part from our You Design program, which gives the DIY community an outlet for their designs and an opportunity to make money from their hard work and ingenuity. Do you have a polished design you think the Miata community could benefit from? Please reach out to us at!



$9.99 flat rate shipping. Orders over $40 ship for free in the US!

Shipping restrictions: None

What does it fit?

Fits: 1999, 2000, 2001, 2002, 2003, 2004, 2004 MSM, 2005, 2005 MSM


Not legal in California.


1 year



Customer Reviews

Based on 9 reviews
serdar d.
fits perfectly in under a minute

quality is very nice and its good to have. for that price i would buy it again

Nathan B.
A godsend

Honestly something like this should've come from the factory, but I'm glad it exists now. Straight forward install and looks clean. The best answer to a problem is usually the easiest won.

Cameron V.S.
Super Easy!!!

Such a simple, but fantastic, addition to my NB! Why didn't this come from the factory, well done folks!!!!


Super easy to install, only have had to fill up once since install but it was a breeze

Christopher N.
Fits great, super convenient

My fuel cap didn’t come with a clip or a leash, so this is a great addition. Easy install, works great