Thermostat fit Yamaha Outboard 4-Stroke 2.5HP 4HP 6HP 8HP 15HP 30HP 40HP 50HP 60HP 70HP 80HP 90HP Motor 6G8-12411-00-00 01 Aftermarket part: Brand ITACO Fit Yamaha Outboard Part Number: 6G8-12411-01/02/03, 6G8-12411-00-00 (check OEM part number before purchase!!!) Fit Yamaha Outboard Models: F 2.5 - 100 HP 4 stroke Themostat