Quicksilver 8M6010300 Thermostat - Fits Select Yamaha 75-90hp 4-Stroke OutboardsQuicksilver thermostat 8M6010300 is for use on 75-90hp F/VF75-F/VF90 Yamaha 4-stroke outboards. 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: 6FP?12411?00. Also can be found in the aftermarket as 18-3641.Engine Part Application:For use on 75 hp through 90 hp F/VF75 through F/VF90 Yamaha 4-stroke outboards.