Thermostat – Fits Yamaha 2-Stroke 9.9-55 HP (Replaces 6F5-12411-01/6F5-12411-02/6F5-12411-03) 20-140HP including 450R models

including 450R models

Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control

impellers should be inspected annually and replaced every 1-2 years or after 100-200 hours of use

Installation: Portable (connects tank to engine)

Lubricate the inside of the pump housing and the new impeller with a water-based lubricant or glycerin

Thermostat – Fits Yamaha 2-Stroke 9.9-55 HP (Replaces 6F5-12411-01/6F5-12411-02/6F5-12411-03) 20-140HP including 450R modelsProduct Details This is a high quality aftermarket Yamaha Outboard Thermostat 143F 62C, designed for a wide range of Yamaha 2 stroke outboard engines from 9. 9 HP to 55 HP, manufactured between 1986 and 1997. It ensures your engine's cooling system maintains the correct operating temperature for optimal performance and longevity. It serves as a direct replacement for Yamaha OEM part numbers 6F5 12411 01 00, 6F5 12411 02 00, and 6F5 12411 03 00, as