Thermostat for 2004-2006 GMC Sierra 1500 & More - Gates 33963

Green Stripe 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