MMR03-0102

MMR Billet oil filler cap for MINI

The MMR Performance billet oil filler cap for MINIs (with the matching OE part number 11128655331) makes topping up your oil a pleasure. It's been designed to instantly give your BMW an under-bonnet boost in the aesthetic department, finished in a deep gloss black anodised finish.

Our cap will fit all MINI B38, B48, B37 & B47 engines (OE Part Number 11128655331). This cap does not fit the newer B48E engines, we offer another cap design for those vehicles.

Meticulously machined from billet with the latest CNC 5-axis technology, before being polished, then gloss-anodised to stay beautiful year after year.

It joins our existing range of engine dress-up products for a complete under-bonnet transformation to your engine bay. Our design allows the cap to be installed in a 0 or 90 degree orientation, keeping the cap aligned to either longitudinal or transverse engine installations.

Never again will you worry whether you tightened your oil cap fully, as our internally sprung cap clicks hard and locks into place. Our cap will ensure that you'll never again have the problem of 'weeping' oil leaks from the standard cap; a known issue with many of these engines as age and mileage causes them to deteriorate.

Each 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.

The carefully considered design gives ample surface grip area for your fingers, making installation and filling your engine oil that little bit easier.

Our MMR cap will fit all engines with the rounded filler cap. Please check the underside of your factory oil cap with the product image to confirm (OE part number 11128655331).

SKU: MMR03-0102

MMR Billet oil filler cap for MINI

Sale price£81.89

Tax excluded. Shipping calculated at checkout


The MMR Performance billet oil filler cap for MINIs (with the matching OE part number 11128655331) makes topping up your oil a pleasure. It's been designed to instantly give your BMW an under-bonnet boost in the aesthetic department, finished in a deep gloss black anodised finish.

Our cap will fit all MINI B38, B48, B37 & B47 engines (OE Part Number 11128655331). This cap does not fit the newer B48E engines, we offer another cap for those vehicles here.

In stock

Product fitment.

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

Model variant

Our cap will fit all MINI B38, B48, B37 & B47 engines (OE Part Number 11128655331). This cap does not fit the newer B48E engines, we offer another cap for those vehicles here.

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.