The thermostat controls when coolant flows to the radiator, so a stuck or leaking unit can cause overheating or poor warm-up. Wrangler JL, JK and TJ and Gladiator JT owners replace it as routine maintenance or swap to a lower temperature thermostat as part of a performance build.
This small category includes factory Mopar thermostats and thermostat housings, a Rugged Ridge thermostat housing, the Mishimoto 180 degree racing thermostat and a RIPP Superchargers 180 degree thermostat for the Pentastar 3.6L. Lower temperature thermostats are often paired with a tune, so check the product notes. Replacing a thermostat usually means draining some coolant, so have fresh coolant ready.
Shop thermostats from Mopar, RIPP Superchargers, Mishimoto and Rugged Ridge. Also see radiators and coolant hoses. Enter your Jeep in the vehicle selector to narrow the results to parts that fit your model and year.