Dodge Journey 2.7L Thermostat L54WA-87-M99 OEM Standard Engine Thermal Management

Dodge Durango 2.7L thermostat, OEM number L54WA-87-M99, installed in the engine coolant circuit, directly controls when cooled liquid flows to the radiator, ensuring engine runs at optimal temperature. Fits Dodge Durango 2.7L models; recommended to be replaced by a professional technician; labor time about 1–1.5 hours. If engine warms slowly, temperature gauge fluctuates abnormally, or warm air is not hot, thermostat may be stuck open or closed; replace promptly to avoid engine overheating or cold-start wear.