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The Mishimoto low‑temperature thermostat for the Dodge 5.9L Cummins is a direct‑fit replacement that opens at 174°F versus the factory 180°F, allowing coolant to circulate earlier and maintain lower engine temperatures. It's useful in warmer climates or for demanding duty cycles where improved cooling is needed. The thermostat installs like the factory unit and is covered by Mishimoto's lifetime warranty.
Mishimoto Dodge 5.9L Cummins Low-Temperature Thermostat
