Yamaha - Thermostat - 677-12411-00-00 Mercury-250HP-3-4L-V6-2021 Builit in bypass so fluid

Builit in bypass so fluid circulates so that pump will not stall

OEM materials are tested to meet Mercury’s corrosion standards and ensure proper fit and wear rate

and protected routing of the cables and harness

6L2-45111-11-EK - CASING

The innovative replaceable atomizing head allows for increased productivity and reduction in coating consumption

Yamaha - Thermostat - 677-12411-00-00 Mercury-250HP-3-4L-V6-2021 Builit in bypass so fluidYamaha Thermostat Cooling System Component 677 12411 00 00 Overview The thermostat is one of those small parts that makes a big difference in how your engine runs. It controls when water flows through the engine, helping it warm up properly and stay at the right temperature. Ive seen engines run too cold or overheat just because the thermostat was stuck open or closed. When its working right, the engine holds a steady temp and runs efficiently. Key