Yamaha - Cooler - 6FM-21841-00-00 Sierra Propeller Hardware Check your engine’s serial number

Check your engine’s serial number and confirm it uses a 140-degree thermostat matching this part number

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and long-term performance—backed by Yamaha’s engineering

Q2: What makes this different from aftermarket spark plug wires

As part of our constant search for eco-friendly and long-lasting solutions

Yamaha - Cooler - 6FM-21841-00-00 Sierra Propeller Hardware Check your engine’s serial number6FM 21841 00 00 COOLER WARNING: 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.