Quicksilver 8M6013867 Thermostat - Fits Yamaha 4.2L F225/F250/F300 OutboardsQuicksilver thermostat 8M6013867 is for use on Yamaha 4.2L F225, F250, F300. This Quicksilver thermostat is designed to meet all OEM specifications. See your owner's or service manual for specific application and installation information. Hardware, gaskets or seals for installation sold separately. This Quicksilver thermostat replaces the following OEM part number: 6CE?12411?00?00. Also can be found in the aftermarket as 18-3524.Engine Part Application:Fits Yamaha F225, F250, F300