







Why buy from us?
Vehicle Fitment
Listed fitment: BMW M135i and M235i F20, F21, F22, F23, F30, F31, F32, F33, F34, and F36.
If you are unsure whether this part fits your vehicle, contact us with your registration or VIN.
MMX Performance - OIL FILLER CAP, BILLET I BMW B58 I N54 I N55 I S54 I S55 I S63
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The MMR Performance billet oil filler cap for all BMW B58 I N54 I N55 I S54 I S55 I S63 makes topping up your oil a pleasure! It has been designed to instantly give your BMW an under-bonnet boost in the aesthetic department, finished in a deep gloss black anodised finish.
It joins our existing range of engine dress-up products for a complete under-bonnet transformation to your engine bay. We've now updated our design to allow the cap to be installed in a 0 or 90 degree orientation - to keep 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. This 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.

This Oil Filler Cap will fit all engines with the rounded filler cap and same underside as shown in product images. Please check the underside of your factory oil cap with the product image to confirm (OE Part Number 11128655331).
Please note you will need to re-use your original oil filler cap seal.
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.
FITMENT DETAILS:
This filler cap will fit all BMW B58 I N54 I N55 I S54 I S55 I S63 engines. Please check the underside of your factory oil cap with the product image to confirm (OE Part Number 11128655331).
Product specifications
- Brand
- MMX Performance (Formally MMR)
- Product type
- Engine Bay Trim
- Part number / SKU
- MMR03-0102-BL
- Vehicle make
- BMW
- Vehicle model
- M135i and M235i
- Vehicle variant
- F20, F21, F22, F23, F30, F31, F32, F33, F34, and F36
Please check the product title, part number and fitment notes before ordering. If you are unsure, contact us with your registration or VIN and we will confirm compatibility.
Warranty: Products are supplied with the applicable manufacturer warranty.
Shipping: We offer UK and worldwide shipping. Supplier-stock delivery estimates are shown above.
Returns: Eligible unused items can be returned within 14 days in accordance with our returns policy.
Klarna payment options are available at checkout where eligible.
Why buy from us?
Vehicle Fitment
Listed fitment: BMW M135i and M235i F20, F21, F22, F23, F30, F31, F32, F33, F34, and F36.
If you are unsure whether this part fits your vehicle, contact us with your registration or VIN.
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