MMX Billet Washer Fluid Cap For G8X BMW M2/M3/M4

It’s all about that detail. Replace that cheap plastic washer cap with the stunning MMX billet washer fluid cap finished in anodised gloss black. The perfect addition to an already comprehensive range of under-bonnet dress up parts.

Upgrade your engine bay with the MMX billet washer fluid cap. Precision CNC-machined from solid aluminium and finished in anodised gloss black for lasting durability. Designed as a direct replacement for the factory plastic cap, it delivers a refined look and premium feel. The perfect finishing touch to our comprehensive under-bonnet dress-up range.

The MMX Performance billet washer bottle cap for BMW G8x models is a UK-engineered upgrade, crafted from a solid block of aluminium.

Purpose-built to replace the factory plastic cap, it delivers a refined feel and a premium under-bonnet finish that far surpasses the OE part.

Each washer fluid cap is precision-sealed to ensure a perfect, leak-free fit. Unlike simple stick-on covers, this is a full replacement designed to integrate seamlessly. Using the latest CNC 5-axis machining, every cap is meticulously shaped, then hand-polished and gloss-anodised for durability and lasting beauty.