195 Degrees F Includes Seal OE Specified Temperature
180 Degrees F Includes Seal Alternate Temperature Option
160 Degrees F Includes Seal Alternate Temperature Option
180 Degrees F Includes Seal Alternate Temperature Option
195 Degrees F Includes Seal OE Specified Temperature
Replaces TH6470.82 With By-pass valve; Gasket Included Opening Temp: 82 C / 180 F Aftermarket Alternative
Replaces TH6470.71 With gasket / seal Opening Temp: 71 C / 160 F Aftermarket Alternative
Replaces TH6470.91 With By-pass valve; Gasket Included Height: 2.12 in Opening Temp: 91 C / 196 F Aftermarket Alternative
195 Degrees F Includes Seal OE Specified Temperature
High Flow Thermostat; Gasket Included Opening Temp: 91 C / 196 F Aftermarket Alternative
180 Degrees F Includes Seal Alternate Temperature Option ; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."
195 Degrees F Includes Seal OE Specified Temperature ; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."
180 Degrees F Includes Seal OE Specified Temperature
Replaces THN1017 With jiggle-pin; With off-set valve seat; With leak holes on the bypass valve; Gasket included Opening Temp: 86 C / 187 F OEM Recommended With OE No. 12600171
187 Degrees F Includes Seal with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
Replaces THN0755 With inversed jiggle-pin; Gasket included Opening Temp: 86 C / 187 F OEM Recommended With OE No. 89018168
187 Degrees F Includes Seal OE Specified Temperature
195 Degree; OE Temperature; Seal included
w/ 180°F
185 Degrees F Includes Seal OE Specified Temperature
Temperature 180 Degrees Seal Included - Seal OE Temperature This part is also available in the Engine Coolant Thermostat Kit 121KT, which contains 10248 (Radiator Cap), 14728 (Engine Coolant Thermostat) and 74040 (Engine Coolant Temperature Sensor)
187 Degrees F Includes Seal with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
174 Degrees F Includes Seal Alternate Temperature Option
160 Degrees F Includes Seal with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option
180 Degrees F Includes Seal with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option
Excludes Housing; 186 Degree; OE Temperature; Seal included
180 Degrees F Includes Seal Alternate Temperature Option
187 Degrees F Includes Seal with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature ; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."
190 Degree; OE Temperature; Seal included
w/ 185°F
160 Degrees F Includes Seal Alternate Temperature Option
195 Degree; OE Temperature; Seal included
With jiggle-pin; With off-set valve seat; With leak holes on the bypass valve; Gasket included Opening Temp: 71 C / 160 F Aftermarket Alternative
With jiggle-pin; With off-set valve seat; With leak holes on the bypass valve; Gasket included Opening Temp: 82 C / 180 F Aftermarket Alternative
187 Degree; OE Temperature; Seal included
187 Degrees F Includes Seal OE Specified Temperature
With integrated housing thermostat; Gasket Included Opening Temp: 71 C / 160 F Aftermarket Alternative
W/Original Equipment or Most Aftermarket Water Pumps; 186 Degree; OE Temperature; Seal included
185 Degree; OE Temperature; Seal included
180 Degrees F 185 Degrees F Includes Seal Kit Contains Front and Rear Thermostats OE Specified Temperature
180 Degree; OE Temperature; Seal included
w/ 180°F
w/ 185°F
Includes Housing; 187 Degree; OE Temperature; Seal included
Browse our selection of quality engine coolant thermostat parts designed specifically for your GMC Sierra 2500 HD. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
AT4 · AT4X · Base · Denali · Denali Ultimate · Pro · SL · SLE · SLT · WT
Crew Cab Pickup · Extended Cab Pickup · Standard Cab Pickup
V8 6.0L · V8 6.6L · V8 8.1L
Automatic · Manual
