Gates 33963 Heavy-Duty Engine Coolant Thermostat

Green Stripe Heavy-Duty Thermostats are designed to withstand noise, vibration, and harshness found under the hood on heavy-duty truck, bus, tractors and heavy equipment applications.
Heavy-gauge brass and stainless steel construction for corrosion resistance
Quality-controlled factory calibration assures accuracy of opening and closing, regardless of pressure changes.
Temperature sensitive heat motor provides consistent valve response for smooth performance and precise engine cooling
Jiggle pins for air venting, seals and gaskets make these thermostats equivalent to the original equipment parts

NOTE: Seal should always be changed when new thermostat is installed..WARNING: Cancer and Reproductive Harm –