Description
Monitor your BMW's oil temperature or oil pressure with the MMX Performance Oil Temperature & Pressure Gauge Adaptor, designed for compatible BMW N54, N55, and S55 engines. This precision-machined adaptor replaces the original equipment (OE) plug on the factory oil cooler thermostat assembly, providing a dedicated 1/8 NPT port for installing an auxiliary oil temperature or oil pressure sensor.
Manufactured from aircraft-grade T6061 billet aluminum and finished in gloss black anodizing, the MMX Performance adaptor combines durable construction with a clean, OEM-style appearance. Its 1/8 NPT female port accommodates compatible automotive oil pressure or oil temperature senders, allowing you to monitor important engine oil data during spirited street driving, track sessions, or operation with increased engine performance.
For BMW enthusiasts running tuned or modified N54, N55, and S55 engines, monitoring oil temperature and pressure can help identify potentially concerning operating conditions. This adaptor provides a convenient sensor installation point without requiring modifications to the oil pan, sump, or engine block.
Designed for installation at the factory oil cooler thermostat assembly, the MMX Performance adaptor offers a practical solution for adding an auxiliary gauge to a compatible BMW engine. It can also be paired with the MMX Performance Oil Thermostat Housing Cover Kit for a coordinated engine bay appearance.
Important: The oil pressure or temperature sender and gauge are sold separately. Confirm your engine code and oil cooler thermostat housing configuration before ordering.
Key Features
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Manufactured by MMX Performance.
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Designed for compatible BMW N54, N55, and S55 engines.
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Provides a 1/8 NPT female port for a compatible oil pressure or oil temperature sender.
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Replaces the OE plug on the factory oil cooler thermostat assembly.
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Machined from aircraft-grade T6061 billet aluminum.
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Gloss black anodized finish for corrosion resistance and a refined engine bay appearance.
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Allows auxiliary oil monitoring without drilling or welding the engine block or modifying the oil pan.
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Suitable for performance-oriented street and track applications.
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Compatible with standard automotive senders using the appropriate 1/8 NPT connection.
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Can be paired with the MMX Performance Oil Thermostat Housing Cover Kit.
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Designed and tested in the United Kingdom.
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Includes a 1-year manufacturer warranty against defects in materials and workmanship, according to the supplied product information.
Technical Specifications
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Brand: MMX Performance
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Product Type: Oil Temperature and Pressure Gauge Adaptor
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Part Number / SKU: MMR03-0502-KPBL
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Material: T6061 billet aluminum
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Finish: Gloss black anodized
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Port Type: 1/8 NPT female
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Installation Location: Factory oil cooler thermostat assembly
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Compatible Sensors: Oil pressure or oil temperature senders with a compatible 1/8 NPT connection
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Sender and Gauge: Sold separately
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Warranty: 1 year against defects in materials and workmanship
Fitment
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BMW N54 engine applications
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BMW N55 engine applications
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BMW S55 engine applications
Fitment Note: This adaptor is designed for use with the original equipment oil cooler thermostat housing on compatible N54-, N55-, and S55-powered BMW vehicles. Exact fitment depends on the engine code and oil cooler thermostat housing configuration. Verify compatibility with your specific vehicle and confirm the required installation seal before ordering. Do not assume compatibility with other BMW engines or aftermarket thermostat housings.
Installation & Compatibility Notes
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Replaces the original plug on the compatible factory oil cooler thermostat assembly.
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Use a compatible oil pressure or oil temperature sender with a 1/8 NPT connection.
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The adaptor does not include the sender or gauge.
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Follow the manufacturer's installation instructions and use the appropriate sealing method.
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Check for oil leaks after installation and verify that the sender and wiring are correctly fitted.
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The MMX Performance Oil Thermostat Housing Cover Kit is available separately and may be ordered with or without the adaptor pre-installed.
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Confirm the exact engine code and housing configuration before purchase.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
