WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.Upgrade your BMW’s engine bay with the MMX Performance 90mm Billet Coolant Expansion Cap (MMR03-1502), designed and engineered in the UK for superior performance and aesthetics. Crafted from 6061 aerospace-grade billet aluminum, this coolant cap combines durability and style, making it the perfect replacement for your factory cap.
Each cap is precision-engineered using CNC 5-axis technology, ensuring a flawless fit and finish. The cap undergoes a meticulous process of polishing and is finished with MMR's signature gloss black anodized coating, providing long-lasting protection against the elements and a sleek, high-end look under the hood.
Unlike other caps, this MMR Performance coolant cap comes pre-sealed with an OE-spec valve and internal spring, making it a true plug-and-play solution. There's no need to remove any components from your existing cap, as the OE replacement internals ensure optimal sealing and pressure regulation.
Designed for both form and function, this billet coolant expansion cap not only enhances your BMW's under-hood aesthetics but also offers an ergonomic design with ample surface grip, making installation and coolant refills hassle-free.
Key Features:
- UK-engineered design for precision and durability
- 6061 aerospace-grade billet aluminum construction
- Full OE cap replacement, not just a cover
- Sophisticated internal springing and bleed-off system for reliability
- Gloss black anodized finish for a premium look
- Pre-installed factory-spec Viton O-ring for optimal sealing
- Perfect addition to the existing range of MMX billet caps
Fitment is for models with the matching OE (17 11 7 639 021) part number.
