MMX Billet Air Conditioning Caps
The MMX Billet Air Conditioning Caps are a stylish and practical upgrade for all BMW and MINI models. These components replace the factory-fitted plastic caps, which can become brittle over time due to heat and repeated handling. Such wear can lead to cracking and poor sealing, resulting in an untidy engine bay.
Machined from high-quality 6061-T6 aluminium, these caps are designed to offer both durability and a refined appearance. Finished in an anodised black, they feature a discreet engraved MMX ‘X’ logo and are hand-polished to match other components in the MMX billet aluminium range.
Why Upgrade?
- Enhanced Durability: Unlike plastic, aluminium resists wear, ensuring a longer lifespan.
- Improved Aesthetics: These caps add a touch of elegance to your engine bay.
- Direct Replacement: They fit seamlessly without requiring any modifications.
Features
- CNC machined from robust 6061-T6 aluminium.
- Anodised black finish with an engraved MMX ‘X’ logo.
- Pre-sealed for a quick, hassle-free installation.
- Reversible: Easily return to stock components if needed.
- Part of the matching MMX billet aluminium engine bay range.
Fitting Information
Installation is straightforward with no need for system re-gas at any stage. Just screw them on and off as required. Compatibility includes:
| Gas Type | OEM Cap Colour | OEM Part Numbers |
| R134A | Black | 64 53 8 397 437, 64 53 8 387 438 |
| R1234YF | Grey | 07 14 9 287 978, 07 14 9 287 979 |
For the best fitment, please use the vehicle lookup functionality on our site or refer to the “Vehicle Fitment” tab for complete details. Whether you’re refreshing your engine bay or replacing old plastic parts, the MMX Billet Air Conditioning Caps provide a simple upgrade that combines quality with style.








