The MMR low-oil thermostat is designed to regulate the oil temperature of BMW N54 and N55 engines more effectively, particularly under heavy loads or during performance driving. By allowing the oil to cool sooner, the engine remains within an optimal temperature range, which contributes to reliability and performance.
This upgrade is particularly suitable for tuned vehicles and cars that are used intensively on the road or on the track.
Benefits
• Improved control of oil
temperature• Maintains temperature between 90°C and
110°C• Increased engine reliability•
Ideal for tuning and track use•
Prevents overheating under high loads•
Durable aluminium construction•
Direct bolt-on installation
Technical specifications
• Type: low-temperature oil thermostat•
Temperature range: ±90°C –
110°C• Material: T6-6061 aluminium•
Finish:
anodised• Manufacturer’s part number: MMR17-0101
Compatibility
• BMW 1 Series E82 / E88 / F20 / F21 – 135i / M135i /
M135iX• BMW 2 Series F22 / F23 – M235i /
M235iX• BMW 3 Series E90 / E91 / E92 / E93 / F30 / F31 – 335i /
335iX• BMW 4 Series F32 / F33 – 435i / 435iX
• Engines: N54 / N55
Important information
• Fits into the original thermostat
housing• Recommended for increased power output or track use•
Ensures more stable oil temperatures under load
Contents
• MMR low-temperature oil thermostat
Frequently asked questions
Why use a lower-temperature thermostat?
To keep the engine cooler under heavy load and when the engine is tuned.
Is this necessary for standard cars?
Not essential, but useful for sporty driving.
Is installation difficult?
No, it’s a direct replacement for the OEM part.
What is the benefit on the track?
More consistent oil temperatures and a lower risk of overheating.
