Mercury Thermostat Kit (120 Degrees) OEM 14586A3

The Mercury Thermostat Kit (120 Degrees) 14586A3 is a genuine Mercury OEM replacement thermostat kit designed for select Mercury and MerCruiser applications.

This 120-degree thermostat kit helps regulate engine operating temperature and maintain proper cooling system performance. A properly functioning thermostat promotes efficient engine operation, reduces warm-up time, and helps prevent overheating or inconsistent engine temperatures.

Genuine Mercury service parts help ensure proper fitment, dependable performance, and compatibility compared to aftermarket alternatives. Replacing worn or sticking thermostats during routine maintenance can help support long-term engine reliability.

To confirm compatibility, contact our team with your engine serial number at (727) 596-5929 before ordering.