Yamaha - Thermostat Cover Cooling System Housing 6EE-E2413-00-1S. Overview. Thermostat covers don't get much attention until you've got a leak or overheating issue staring you down. I've seen plenty of cases where a warped or corroded cover caused cooling problems that weren't obvious at first. This piece keeps the thermostat sealed and directs water where it needs to go. When it's solid and seated right, the cooling system runs steady without surprises.. Key Features. • Secure Thermostat Housing - Holds the thermostat in place for proper cooling system operation.• Leak Prevention Design - Helps maintain a tight seal to prevent water loss.• Durable Construction - Built to handle engine heat and continuous water exposure.• Consistent Water Flow Support - Ensures proper routing of coolant through the system.• Exact Yamaha Fitment - Matches factory specifications for proper alignment and installation.. Engine & Boat Compatibility. Designed for Yamaha outboard engines utilizing a thermosta