The MMR Performance billet oil filler cap for BMW S58 and B48E engines has been designed from the ground up in the UK, from a solid piece of billet aluminium. Each cap is designed to directly replace the OE cap, not merely stuck in place.
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.
Never again will you worry whether you tightened your oil cap fully, as the 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.
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Designed in the UK
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Crafted from 6061 aerospace-grade aluminium
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Full OE cap replacement
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Internally sprung clip for secure and precise fit
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Anodised in MMR signature gloss black
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Pre-installed factory spec Viton O-Ring
Please check the underside of your factory oil cap for the OE part number. The MMR billet oil cap for the S58 and B48E fits OE part number 11 12 8 654 637.
Most popular models include:
B48E:
BMW F4x M135i/M235i
S58:
BMW G8x M2/M3/M4
BMW F9X X3/X4