MMX Performance Billet Temperature Adaptor – BMW N54 / N55 / S55
The MMX Performance Billet Temperature Adaptor is the ideal solution for BMW owners looking to install an auxiliary oil temperature or oil pressure gauge on N54, N55, or S55 engines.
This adaptor replaces the factory blanking plug located on the oil cooler thermostat assembly, converting it to a 1/8 NPT port for aftermarket sensors. Installation is simple, clean, and fully reversible — allowing you to add accurate engine monitoring without modifying factory components.
Precision-machined from T6061 billet aluminium, the adaptor delivers both durability and a high-quality OEM+ appearance. It’s finished in MMX’s deep gloss black anodising, ensuring long-lasting protection and a premium look under the bonnet.
Designed to integrate seamlessly with the factory thermostat housing, this adaptor also pairs perfectly with the MMX oil thermostat cover set, making it a must-have upgrade for performance-focused builds where detail matters.
Key Features:
Allows fitment of oil temperature or oil pressure gauges
Converts factory plug to 1/8 NPT sensor port
Direct replacement on oil cooler thermostat assembly
Clean, reversible installation
CNC-machined from T6061 billet aluminium
Deep gloss black anodised finish
OEM+ under-bonnet appearance
Vehicle Compatibility:
Fits BMW models with N54, N55 or S55 engines, including:
