The Spoon racing thermostats promote greater cooling efficiency by significantly decreasing high engine temperatures resulting from modified applications. Once the engine is fully warmed up, the Spoon low-temperature racing thermostat will open at a lower temperature than standard thermostats. This allows the coolant to flow through the engine sooner, thus reducing and maintaining cooler engine temperatures. OEM - Starts opeing at 78°- Fully open at 90° SPOON - Starts opeing at 68° - Fully open at 83°