MMX Performance BMW N20 / N5X / S55 Billet Oil Filter Housing Cap

The MMX Performance BMW Billet Oil Filter Housing Cap is a precision-engineered upgrade designed to eliminate one of the most common failure points in BMW engines. Factory plastic oil filter housings are known to crack during routine servicing, often leading to frustrating oil leaks and repeated replacements. This billet solution replaces the fragile OE component with a durable, long-term alternative.

Machined from a solid block of 6061 aerospace-grade aluminum using advanced 5-axis CNC technology, the MMX housing delivers exceptional strength, precision, and reliability. Finished in a gloss Midnight Black anodized coating and laser-etched with the MMX logo, it offers a clean OEM+ appearance while resisting corrosion and wear over time.

Beyond durability, the MMX housing features an integrated pressure control oil bypass, eliminating the need to transfer the factory plastic bypass valve. This reduces the risk of damage during installation and ensures consistent oil system operation. Supplied with a factory-spec O-ring, the cap provides a proper seal and direct OEM-level fitment.

Installation is straightforward and best completed during an oil service. Once installed, the MMX billet oil filter housing cap delivers long-term reliability, eliminating the risk of cracking and oil seepage associated with the factory component.

A functional and aesthetic upgrade, this billet oil filter housing cap is engineered for durability, precision, and consistent performance across both daily-driven and high-performance applications.

Product Details

• MMX Performance billet oil filter housing cap for BMW
• Direct replacement for factory plastic oil filter housing
• CNC-machined from 6061 aerospace-grade aluminum
• Advanced 5-axis machining for precise fitment
• Integrated pressure control oil bypass – no transfer of OE valve required
• Gloss Midnight Black anodized finish with laser-etched MMX logo
• Eliminates risk of cracking and oil leaks associated with OE plastic housing
• Includes factory-spec O-ring for proper sealing
• Durable, corrosion-resistant construction for long-term use
• Simple installation during routine oil service

Vehicle Applications

Notes

• BMW models equipped with N20, N52, N54, N55, and S55 engines
• SKU: MMR03-0101-BL
• Direct OE replacement – no modifications required
• Prolonged exposure to extreme heat may affect anodized finish appearance
• This does not impact performance or functionality
• Professional installation recommended
• Includes a 1-year manufacturer warranty against defects in materials and workmanship
• Designed and tested in the United Kingdom