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Performance M

ECS Tuning 90°C (194°F) Low Temp Thermostat | BMW Performance Cooling Upgrade | M3 F80/M4 F82 F83 S55 | M5 F10/M6 F12 F13 S63 | 550i 650i 750i N63 | X5M X6M | 545i 645Ci 650i N62 | Coolant Temp Control Track/Street

ECS Tuning 90°C (194°F) Low Temp Thermostat | BMW Performance Cooling Upgrade | M3 F80/M4 F82 F83 S55 | M5 F10/M6 F12 F13 S63 | 550i 650i 750i N63 | X5M X6M | 545i 645Ci 650i N62 | Coolant Temp Control Track/Street

£160.00
£160.00
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

BMW low temperature cooling upgrade for serious road and track drivers

Take control of engine heat with this early-opening coolant control unit designed to target around 90 degrees Celsius. By allowing coolant flow sooner, it helps stabilise temperatures, reduces heat soak and supports reliable performance across spirited driving, daily use and track days. It is a popular choice on turbocharged and high output BMW powertrains where heat management is critical.

Why choose a lower opening temp unit

  • Improved thermal management for S and N series BMW engines, ideal for performance builds and fast road setups
  • Helps protect gaskets, hoses and plastic fittings by reducing prolonged high temperature exposure
  • More consistent coolant temps for repeatable performance and confidence on back-to-back pulls
  • Supports reliability on tuned cars where added boost and ignition advance create extra heat
  • Simple upgrade that complements intercoolers, radiators and oil cooling mods

We run this unit on customer cars and our own builds, and it has proven to be a robust, effective cooling system enhancement. Owners report steadier temps, less heat fade and a more durable setup for hard driving.

Tuning note

For maximum benefit, a software calibration or remap may be recommended so the ECU strategy aligns with the lower operating temperature. This can help prevent unwanted warnings and ensure optimal fan control and fuelling under load.

Vehicle compatibility

Fits a wide range of BMW models and engines. Check your engine code and chassis below before ordering.

  • BMW E53 X5 - N62 4.4 litre, N62 4.8 litre
  • BMW E60 545i - N62 4.4 litre
  • BMW E60 550i - N62 4.8 litre
  • BMW E63 645Ci - N62 4.4 litre
  • BMW E63 650i - N62 4.8 litre
  • BMW E64 645Ci - N62 4.4 litre
  • BMW E64 650i - N62 4.8 litre
  • BMW E65 745i - N62 4.4 litre
  • BMW E65 750i - N62 4.8 litre
  • BMW E65 760i - N73 6.0 litre
  • BMW E65 760Li - N73 6.0 litre
  • BMW E65 B7 Alpina - N62 4.4 litre
  • BMW E66 745Li - N62 4.4 litre
  • BMW E66 750Li - N62 4.8 litre
  • BMW E66 760Li - N73 6.0 litre
  • BMW E70 X5 M - S63 4.4 litre
  • BMW E70 X5 xDrive48i - N62 4.8 litre
  • BMW E71 X6 50iX - N63 4.4 litre
  • BMW E71 X6 50iX - S63 4.4 litre
  • BMW E71 X6 ActiveHybrid - N63 4.4 litre
  • BMW E71 X6 M - S63 4.4 litre
  • BMW E71 X6 xDrive50i - N63 4.4 litre
  • BMW F01 750i - N63 4.4 litre
  • BMW F01 750i xDrive - N63 4.4 litre
  • BMW F02 750Li - N63 4.4 litre
  • BMW F02 750Li xDrive - N63 4.4 litre
  • BMW F02 750LiX - all variants
  • BMW F02 760Li - N74 6.0 litre
  • BMW F07 550i - N63 4.4 litre
  • BMW F07 550i xDrive - N63 4.4 litre
  • BMW F10 550i - N63 4.4 litre
  • BMW F10 550i xDrive - N63 4.4 litre
  • BMW F10 M5 - S63 4.4 litre
  • BMW F12 650i - N63 4.4 litre
  • BMW F12 650iX - N63 4.4 litre
  • BMW F12 M6 - S63 4.4 litre
  • BMW F13 650i - N63 4.4 litre
  • BMW F13 650iX - N63 4.4 litre
  • BMW F13 M6 - S63 4.4 litre
  • BMW F80 M3 - S55 3.0 litre
  • BMW F82 M4 - S55 3.0 litre
  • BMW F83 M4 - S55 3.0 litre

Ideal search terms and use cases

BMW low temp thermostat, BMW cooling system upgrade, S55 thermostat upgrade, S63 thermostat upgrade, N63 thermostat upgrade, N62 thermostat upgrade, F80 cooling mod, F82 cooling mod, F10 cooling mod, F12 cooling mod, BMW track day cooling, BMW heat management, BMW radiator performance, BMW coolant temperature control.

Installation and support

Want it fitted professionally and coded correctly if required. Book with MJ Modifications in Warwickshire for a quote and expert advice. Email info@mjmodifications.co.uk to schedule your install.

Note, professional installation is recommended, and a calibration may be required on certain vehicles to fully optimise the benefits.

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