What is the cost to replace the thermostat

Hi this is Dusty, I'm one of the auto experts on RepairPal's Car Genius team. A quick search on our estimator tool at https://repairpal.com/estimator shows an estimate of $374- $428 which includes parts (thermostat and coolant). Diagnostics and taxes are excluded from that estimate as they can vary on a case by case basis. Our estimator tool uses OEM parts & labor (Mopar for your Dodge) if you chose to use a high-quality aftermarket part, you could save even more. Feel free to check it out for accurate costs on lots of repairs in your area. If you have any questions, give us a call at (877) 913-1554