Description
Keep your BMW’s engine oil temperatures under control with the MMX Performance Low Temperature Oil Thermostat for N54 and N55 engines. Designed to maintain consistent oil temperatures between 90°C – 110°C, this thermostat is a vital upgrade for any high-performance or track-driven car where sustained high temps can lead to oil degradation and engine wear.
By opening earlier than the factory thermostat, the MMR unit helps your engine operate within a safer, more stable thermal window — reducing the risk of heat soak, maintaining oil viscosity, and helping extend engine life during spirited driving, hot climates, or motorsport use.
Precision-engineered for direct replacement of the factory thermostat, installation is straightforward with no additional modifications required. Constructed to exacting standards using high-quality materials, the thermostat is built to deliver reliable performance and long service life under demanding conditions.
Please note: This thermostat is only compatible with 2008+ model year BMWs equipped with the N54 or N55 engine.
- Maintains optimal oil temperature (90°C – 110°C)
- Ideal for track use or high-performance applications
- Reduces oil temperature spikes and promotes engine longevity
- Direct OE replacement for N54/N55 factory thermostat
- High-quality materials for durability and reliability
- Simple, straightforward installation
Fitment — BMW Models with N54 / N55 Engine (2008+)
BMW N54 Engine Models
- E82 135i (2008–2010)
- E88 135i Convertible (2008–2010)
- E90 / E91 / E92 / E93 335i (2007–2010)
- E60 / E61 535i (2008–2010)
- E89 Z4 35i / 35is (2009–2016)
- E82 1M Coupe (2011)
BMW N55 Engine Models
- E82 / E88 135i (2011–2013)
- E90 / E91 / E92 / E93 335i (2011–2013)
- F20 / F21 M135i (2012–2015)
- F22 / F23 M235i (2014–2016)
- F30 / F31 / F34 335i (2012–2015)
- F32 / F33 / F36 435i (2013–2016)
- F10 / F11 535i (2011–2016)
- E89 Z4 35i / 35is (2011–2016)
- F07 535i GT (2011–2017)
- F25 X3 35i (2011–2017)
- F26 X4 35i (2014–2018)
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.
