MMR Performance | Billet oil filler cap | BMW

At PERON Automotive, attention to detail matters—from the engine’s internals to its visual presentation. That’s why we recommend the MMR Performance Billet Oil Filler Cap as the perfect finishing touch for your BMW’s engine bay.

Crafted from billet aluminium and finished in MMR's signature gloss black anodising, this cap offers a satisfying tactile feel and a subtle visual upgrade every time you pop the bonnet. It’s not just about looks—this cap is engineered for a precise fit and long-lasting durability.

Engine Compatibility:

This oil filler cap fits a wide range of BMW engines using OE part number 11128655331, including:

• B38, B48, B37, B47, B58

• N54, N55, S54, S55, S63

Note: This cap is not compatible with the newer S58 or B48E engines — we offer a specific version for those.

Key Features:

• CNC-machined from high-grade billet aluminium

• Direct replacement for OE cap (PN: 11128655331)

• Finished in deep gloss black anodising

• Enhances under-bonnet aesthetics

• Fits a wide range of BMW petrol and diesel engines

Whether you're refreshing your bay for shows or simply upgrading a plastic OE part, this billet oil filler cap adds a refined, performance-focused touch—inside and out.