At PERON Automotive, we know that even the smallest components can make a big impact—both in terms of performance and presentation. The MMX Performance Billet Oil Filler Cap is one of those finishing touches that speaks volumes.

Designed from the ground up in the UK and precision-machined from a solid block of billet aluminium, this cap is a true OE replacement—not a stick-on cover. It offers improved durability, heat resistance, and a premium look that elevates any engine bay.

This specific version is designed to fit BMW S58 and B48E engines, replacing the factory cap with OE part number 11 12 8 654 637. Please double-check your existing cap’s underside to confirm compatibility before ordering.

Key Features:

CNC-machined from solid billet aluminium
Direct replacement for OE part no. 11 12 8 654 637
Designed to fit BMW S58 and B48E engines
Enhanced durability and heat resistance
Clean, motorsport-inspired anodised finish

Whether you're completing your under-bonnet dress-up or replacing a tired factory cap, the MMX billet oil filler cap offers a blend of form and function that delivers.

BMW - F97 / F98 | X3 M / X4 M

MMX Performance | Oil filter housing | BMW S58

MMX Performance | Billet oil filer cap | BMW S58