Mercury - Installer tool - 91-847415 Yamaha-F40-2005 When it starts to wear

When it starts to wear

causing less slippage

Replacing a worn thermostat assembly with a genuine Yamaha component helps restore proper cooling system operation and supports reliable engine performance

ensuring smooth performance whether you're idling at the dock or pushing full throttle

Clear Bowls: Use for outboard and above deck installations

Mercury - Installer tool - 91-847415 Yamaha-F40-2005 When it starts to wearThis product has been superseded by: 91 8M0050803 Installer toolWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.