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The Mishimoto high‑temperature thermostat for the Dodge 5.9L Cummins is a direct‑fit replacement that opens at 190°F compared to the factory 180°F, restricting coolant flow longer to allow faster warm‑up. This makes it suitable for cold climates where quicker engine warm‑up is desired. The thermostat is manufactured to OEM fitment standards and includes Mishimoto's lifetime warranty.
Mishimoto Dodge 5.9L Cummins High-Temperature Thermostat
