Due to a staff holiday between 17th and 22nd August, website orders may be processed over night, so a small delay is to be expected before they are shipped.
eBay orders are not affected. If you need your items urgently, please order from our eBay shop: Orranje Performance on eBay.
Use voucher code ALPSTOUR25 on our website for £5 off your order during this time.
The MMR Performance billet coolant expansion cap for F-Series MINI has been designed from the ground up in the UK, from a solid piece of billet aluminium.
Each MMR cap starts life as a solid billet of 6061 aerospace-grade aluminium. It's meticulously machined from this billet with the latest CNC 5-axis technology, before being polished, then gloss-anodised to stay beautiful year after year.
All MMR coolant caps arrive pre-sealed and pre-installed with an OE spec valve and internal spring. No need to remove the valve assembly from your OE cap. A true plug and play solution.
It has been designed to instantly give your MINI an under-bonnet boost in the aesthetic department, finished in a deep gloss black anodised finish.
Never again will you worry whether you tightened your expansion cap fully, as the cap contains complete OE replacement internals. The carefully considered design gives ample surface grip area for your fingers, making installation and filling your coolant that little bit easier.
It joins an existing range of engine dress-up products for a complete under-bonnet transformation to your engine bay.
Designed and engineered in the UK
Crafted from 6061 aerospace-grade aluminium
Full OE cap replacement
Sophisticated internal springing and bleed off
Anodised in MMR signature gloss black
Joins existing range of MMR billet caps
Pre-installed factory spec Viton O-Ring
Although great effort has been made to directly confirm fitment on every model of MINI, on the odd occasion models can be missed. Please check the underside of your factory expansion cap for the OE part number. It’s a smaller cap, measuring roughly 60mm in diameter. The MMR billet coolant expansion cap for MINI fits OE part number 17 11 7 639 024.
Please note if the part is under excessive heat for prolonged periods of time, it can affect the overall finish, which is unavoidable with anodised aluminium products.