Mishimoto 89-93 Dodge 5.9L Cummins 87.5C High-Temperature ThermostatSpecifications: Manufacturer: Mishimoto Part Number: MMTS RAM 89H Opening temperature: 68 Deg C The Mishimoto racing thermostat will promote greater cooling efficiency in your stock or modified engine. Once the engine is fully warmed up, the Mishimoto racing thermostat will open at a lower temperature than standard thermostats. This allows coolant to flow through the engine sooner, which reduces and maintains cooler engine temperatures. The Mishimoto
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