GMC V8/V6/L6 Racing Thermostat, 1955–1999
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A failed thermostat can lead to overheating, accelerated engine wear, and potential internal engine damage. The Mishimoto GMC Racing Thermostat is precision engineered to provide your vehicle with years of reliable service and optimal cooling efficiency even in the most demanding environments. Mishimoto racing thermostats promote greater cooling efficiency by significantly decreasing high engine temperatures. Once the engine is fully warmed up, the Mishimoto low-temperature racing thermostat will open at a lower temperature (180°F) compared to standard thermostats (195°F). This allows coolant to flow through the engine sooner, thus reducing and maintaining cooler engine temperatures. Mishimoto thermostats are digitally calibrated, utilize high-quality wax to ensure precise and consistent opening temperatures, and include a gasket for seamless, leak-free installation. The Mishimoto low-temperature thermostat is applicable for most 1955–1999 GMC V8, V6 and L6 engines; check the application guide for more details! As with all our products, this racing thermostat is guaranteed by the Mishimoto Lifetime Warranty
Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.
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OEM Activation Temp C
OEM Activation Temp F
(1) Mishimoto ThermostatMishimoto Lifetime Warranty
Mishimoto Activation Temp (Fahrenheit)
Mishimoto Activation Temp (Celsius)
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