MMR Performance Billet Fuel Filler Cap / Gas Cap / Petrol Cap for MINI (BMW) Cooper, Cooper S, JCW – F-Series & R-Series (F54 F55 F56 F57 F60, R55 R56 R57 R58 R59) – Gloss Black Anodised CNC 6061 Aluminium Replacement Upgrade

Premium billet alloy tank cap upgrade for Mini F-series and R-series

Give your Mini a proper engineered touch every time you refuel. This MMR Performance CNC-milled 6061 aluminium tank cap replaces the thin factory plastic part with a solid, gloss black anodised upgrade that looks smart under the flap and feels even better in your hand. Laser-etched branding, a precise twist action and a positive click deliver that satisfying, motorsport-grade feel you will appreciate on every fill-up.

Reasons you will love it

• Billet 6061 aluminium body for strength and longevity. Precision CNC machining for a perfect, rattle-free fit
• Deep gloss black anodised finish with laser detail. Durable, corrosion resistant and easy to keep clean
• Tactile twist and click action that elevates every refuel. Feels premium and precise
• Direct swap for the original cap. No coding. No fuss
• Supplied with fresh O-ring gasket and tether strap for full OE-style functionality
• Integrated pressure vent to help maintain stable tank pressure during temperature changes
• Compatible with the factory filler flap holder so you can park the cap as usual while you top up

We run this cap on our own Minis and on customer cars. Feedback is consistently brilliant. It is a small change that makes a big difference to quality feel and looks, with the reliability you want from a daily driver, fast road or track-day build.

Fitment coverage

Suitable for 2007-on Mini models across these chassis:

• F54 Clubman. F55 5-door. F56 3-door Hatch. F57 Convertible
• F60 Countryman
• R55 Clubman. R56 Hatch. R57 Convertible. R58 Coupé. R59 Roadster

Works with Mini One, Cooper, Cooper S and John Cooper Works variants.

Technical details

• Material: 6061 aerospace-grade billet aluminium
• Manufacture: precision CNC machining with hand finish
• Finish: gloss black anodised with laser-etched logo
• Included: new sealing O-ring and retaining tether
• Function: built-in pressure relief vent

Fitting and support

Quick DIY swap using basic hand tools. Prefer it fitted for you. Book with MJ Modifications in Warwickshire. Supply and install available. Request a quote at info@mjmodifications.co.uk.

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Order today for a cleaner look, a premium feel and rock-solid sealing every time you fill up.