Treat your Olds to a dose of reliability with the Mishimoto racing thermostat. Proper maintenance of the cooling system is key for optimal performance and essential for extending the life of your engine. A failed thermostat can lead to overheating, accelerated engine wear, and potential internal engine damage. The Mishimoto Oldsmobile 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 (180F) compared to standard thermostats (195F). 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 have a blown 442 or a convertible Cutlass, trust Mishimoto to keep your Oldsmobile on the road and out of the shop! This thermostat is applicable for most V8, V6, and L6 Oldsmobile engines from 1964 to 1993; for more information check out our application guide! As with all our products, this racing thermostat is guaranteed by the Mishimoto Lifetime Warranty