Another great feature of the cooler kit is the thermostat we include. To maintain a constant temperature and engine warm-up, a free-flow thermostat is built into the external unit of the standard type block adapter and the remote type filter. The valve closes below 70 C (158 F) and opens smoothly and fully at 80 ℃ (176 ℉) to ensure optimal temperature. The cooler kits help extend the life of your and internal engine components. Aggressive driving can cause engine temperatures to rise, and an intercooler is a great addition, especially effective under harsh driving conditions. By using an internal fin core design similar to that found in popular intercoolers, we are able to increase intercooler capacity, lower intercooler temperatures, and extend engine and intercooler life. Our systems also offer an internal (or external) thermostat (opening range 80°C (176℉) for engine warm-up. Each intercooler is pressure tested to 175 psi. Our regular samples are burst tested to 350 psi. Part