Thermostat (130°F/54°C) – Fits Mercury/Mariner 200-300HP (Replaces 885599003, 885599004, 8M0057307) 9HP Brand Part Number Yamaha 63V-W0078-01-00

Brand Part Number Yamaha 63V-W0078-01-00 Yamaha 63V-W0078-00-00 Yamaha 63V-W0078-02-00 Yamaha 63V-W0078-03-00 Sierra 18-3412 Sierra 18-3433 GLM 12066

1 × Impeller Key (90752-ZV7-000)

UV-coated to prevent fading

For Johnson/Evinrude models

Check and top off the fluid level as the air is purged

Thermostat (130°F/54°C) – Fits Mercury/Mariner 200-300HP (Replaces 885599003, 885599004, 8M0057307) 9HP Brand Part Number Yamaha 63V-W0078-01-00Product Details This is a replacement Thermostat (130F 54C) designed for a wide range of Mercury and Mariner 200 300 HP V6 engines, including EFI, DFI, Optimax, Pro XS, and XS models manufactured between 2002 and 2017. It ensures your engine maintains the correct operating temperature for optimal performance and fuel efficiency. It serves as a direct replacement for Mercury OEM parts 885599003, 885599004, and 8M0057307, as well as aftermarket