- Direct fit for 1963–1966 Chevy/GMC C/K with a 250 4.1L, 283 4.6L, or 292 4.8L
- Promotes greater cooling efficiency by significantly decreasing high engine temperatures
- Opens at a lower temperature (180°F) than standard thermostats, allowing coolant to flow through the engine sooner, reducing engine temperatures
- Digitally calibrated for precise, consistent operation
- Includes high-quality thermostat seal for leak-free installation
- Lifetime Warranty
Keep your classic cool under pressure with an essential upgrade to your cooling system. An unreliable and inefficient thermostat can lead to overheating, accelerated engine wear, and potential internal engine damage. The Mishimoto Chevy/GMC C/K Series Racing Thermostat is precision engineered to provide your V8-powered muscle car with 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. Whether you are cruising to the local meet or making a pass down the strip, trust the Mishimoto low-temperature thermostat to keep your car on the road and out of the shop. As with all our products, this racing thermostat is guaranteed by the Mishimoto Lifetime Warranty.
(1) Mishimoto Thermostat
Mishimoto Lifetime Warranty
- TECH SPECS
Engine Codes https://mishimoto.com/media/additionalpdfs/mmts-wra-87l-engine-codes.pdf Fits https://mishimoto.com/media/additionalpdfs/mmts-wra-87l-additional-fitments.pdf
OEM Activation Temp C 90.5°C OEM Activation Temp F 195°F Mishimoto Activation Temp (Fahrenheit) 180°F Mishimoto Activation Temp (Celsius) 82°C
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.
For our complete warranty policy, please click here.
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