Sierra Marine 180339 Thermostat Gasket

The Sierra Marine 180339 Thermostat Gasket is a replacement sealing component for compatible marine thermostat housing applications. It is designed to help create a reliable seal between mating surfaces, supporting proper thermostat service and helping reduce the risk of coolant or water leakage caused by a worn, damaged, or reused gasket. This gasket is suitable for maintenance, repair, and replacement work where the Sierra Marine part number 180339 is specified.
Before installation, compare the existing gasket and verify the application using the manufacturer’s service information, engine model, and part number. Proper