MMX Billet Air Conditioning Caps

Welcome to the MMX billet aluminium Air Conditioning cap set to replace the brittle factory-fitted plastic caps on BMW and MINI models. Machined from high-quality 6061-T6 aluminium, anodised black and hand-polished with our subtle MMX ‘X’ logo, they offer a durable, visually refined alternative to OE parts. Compatible with both black R134A and grey R1234YF caps, these pre-sealed, direct OEM replacements install in seconds and can be returned to stock just as easily.

Brittle Plastic? Meet MMX Billet AC Caps.

Welcome to the MMX billet aluminium Air Conditioning cap set designed to replace the factory-fitted plastic caps found on a all BMW and MINI models. Often overlooked, these small components are prone to becoming brittle with age, heat and repeated removal, leading to cracking, poor sealing and an untidy engine bay.

Machined from high-quality 6061-T6 aluminium and finished in anodised black, our AC caps offer a durable and visually refined alternative to the OE parts. Each cap features a subtle engraved MMX ‘X’ logo and is hand-polished to match the rest of our billet aluminium dress up range.

We offer direct replacements for both the original black and grey coloured OEM plastic caps. This ensures compatibility with older R134A systems using the black caps, as well as newer R1234YF systems fitted with grey caps from circa 2017 onwards.

Designed as a direct OEM replacement, the caps are pre-sealed for quick and straightforward installation, requiring no modification. They can also be removed and returned to stock in seconds.

Whether completing an engine bay refresh or simply replacing ageing plastic components, our billet aluminium AC caps provide a simple upgrade that blends durability with clean, OEM-plus styling.

MMX Billet Air Conditioning Caps
MMX Billet Air Conditioning Caps
MMX Billet Air Conditioning Caps
MMX Billet Air Conditioning Caps
MMX Billet Air Conditioning Caps
MMX Billet Air Conditioning Caps
SKU: MMR03-0003

MMX Billet Air Conditioning Caps

Sale price£24.99

Tax excluded. Shipping calculated at checkout

Welcome to the MMX billet aluminium Air Conditioning cap set to replace the brittle factory-fitted plastic caps on BMW and MINI models. Machined from high-quality 6061-T6 aluminium, anodised black and hand-polished with our subtle MMX ‘X’ logo, they offer a durable, visually refined alternative to OE parts. Compatible with both black R134A and grey R1234YF caps, these pre-sealed, direct OEM replacements install in seconds and can be returned to stock just as easily.

Compatibility:

Gas type R134A, black OEM cap.

OEM part numbers: 64 53 8 397 437 and 64 53 8 387 438

Gas type R1234YF, grey OEM cap.

OEM part numbers: 07 14 9 287 978 and 07 14 9 287 979

OEM Plastic Cap Colour: Grey
In stock
Find a dealer

Vehicle fitment.

While every effort has been made to ensure the accuracy of vehicle information, we are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their specific vehicle and engine variant.

Model variant

For all BMW & MINI models with Black or Grey AC Caps. Please confirm the OE part number when ordering.

CNC machined from 6061-T6 aluminium.

Pre-sealed for easy installation.

Where to purchase

Over 100 dealers, globally.

Our network of expert MMX Performance dealers can supply our full range, together with product guidance and advice, plus often an experience fitting service.

If you haven't got a MMX Performance dealer close to you, don't worry! Remember you can buy direct from our MMX Performance webshop.

Find a dealer

About MMX

A decade worth of obsession.

MMX Performance products have been designed and developed in the UK with passion by enthusiasts, for enthusiasts. All of our products are created in the world's toughest development lab: motorsport. We push the limits and reach new heights on track; then refine our products to give you the performance you need when you want it on the road.

Our extensive range of BMW and MINI upgrades offer unrivalled quality, performance and reliability worldwide; furthermore, every product carrying the MMX logo is thoroughly durability tested both on the road and track, so you can have complete peace of mind that you're installing only the best quality products to unlock the true performance potential from your car.