MMX Performance Billet Oil Filler Cap – BMW (OE 11128655331)
Upgrade your BMW engine bay with the MMX Performance Billet Oil Filler Cap, precision-engineered to replace the factory oil cap (OE part number 11128655331). Designed for both form and function, this cap delivers a clean OEM+ look while solving common issues found with ageing standard caps.
Machined from a solid billet of 6061 aerospace-grade aluminium, each cap is CNC-cut using advanced 5-axis technology, polished, and finished in a deep gloss black anodising for long-lasting durability and premium under-bonnet aesthetics.
An internally sprung locking mechanism provides a firm click on installation, ensuring the cap is fully secured every time. This eliminates the risk of loose caps and helps prevent oil weep and leaks, a known problem with worn factory units. The knurled grip design also makes oil top-ups quick and effortless.
The cap can be installed in 0° or 90° orientations, allowing perfect logo alignment on both longitudinal and transverse engine layouts.
Key Features:
- Direct replacement for BMW oil cap OE 11128655331
- CNC-machined from 6061 billet aluminium
- Gloss black anodised finish for lasting appearance
- Positive-click sprung locking system
- Helps prevent oil leaks and cap loosening
- Enhanced grip for easy removal and refitting
- 0° / 90° adjustable installation orientation
Vehicle Compatibility:
Fits BMW engines with the rounded oil filler cap, including:
B38, B48, B37, B47, B58, N54, N55, S54, S55 & S63
**Please check the underside of your original oil cap against the product image to confirm compatibility before ordering**
