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It is designed for 4-stroke models
What is the correct operating temperature for this thermostat
and Mallory 9-45612
What is the purpose of the quick-connect feature
Thermostat – Fits Yamaha 4-Stroke 80-100HP (Replaces 6D9-12411-00) 350HP followed by numbersProduct Details This is a replacement Thermostat Fits Yamaha 4 Stroke 80 100HP (Replaces 6D9 12411 00), designed for F80 to F100 series outboard motors from approximately 2005 to 2017. It ensures your engine maintains the correct operating temperature of 55C (131F) for optimal performance and fuel efficiency. This part is a direct interchange for Yamaha part number 6D9 12411 00 and Sierra 18 3639. Installs as a direct replacement for the OEM
