Mazda Sky300 Performance Thermostat 76°C

What is it?

The Sky300 76°C Performance Thermostat is a plug-and-play replacement for the stock thermostat on Skyactiv 2.0 and 2.5 engines through 2020. It is designed to open at a lower temperature (76°C), allowing coolant to circulate sooner and keeping the engine at optimal operating temperature.

What benefits does it bring?

• 🌡️ Cooler engine: Opens sooner to allow the engine to run cooler, maintaining power even in hot weather or during demanding driving.
• 🔥 More sustained power: Prevents the control unit from reducing power when temperatures reach 95‑100°C, allowing peak performance to be maintained for longer.
• 🔪 Increased protection: Helps extend the life of the engine and cylinder head gasket components by better controlling temperatures.
• 👌 Easy installation: replaces the original thermostat without modification.

Compatibility and specifications

• Compatibility: Skyactiv 2.0, 2.5 and 2.5 Turbo engines of Mazda 3, Mazda 6 (including turbo) Mazda CX‑5 and Mazda CX‑9.
• Opening temperature: 76°C (lower than original).
• Material: OEM component modified for superior performance.

We recommend accompanying this upgrade with a reprogramming to maximize performance.