Thermostat – Fits Yamaha 4-Stroke 80-100HP (Replaces 6D9-12411-00) family-yamaha-200tjrt Install the two steering locks

Install the two steering locks onto the hydraulic steering cylinder rods on both sides of the motor to prevent movement

especially the sealing surfaces

Secure the housing with bolts

Direct replacement for 27331

8M0057307 Mercury 225 DFI (serial OG129222-Up) 225 2-Stroke 1998–Up 885599003

Thermostat – Fits Yamaha 4-Stroke 80-100HP (Replaces 6D9-12411-00) family-yamaha-200tjrt Install the two steering locksThermostat Fits Yamaha 4 Stroke 80 100HP (Replaces 6D9 12411 00) This thermostat is engineered to fit a range of Yamaha 4 stroke outboard motors, specifically 80 100HP models including the F100D, F100A, F100B, and F80A series manufactured between 2005 and 2017. It serves as a direct replacement for several OEM and aftermarket part numbers, ensuring compatibility and restoring proper engine temperature regulation for optimal performance and longevity.