Thermostat (60°C/140°F) – Fits Mercury/Mariner 75-225 HP (Replaces 8M0175321, 855676004, 8M6010296) 160-430HP check your engine's serial number

check your engine's serial number against the ranges provided in the Engine & Model Compatibility table

and the 8mm adapter for Honda/Johnson/Evinrude models

We recommend using the tray itself as a template by flipping it upside-down to trace the outer flange

are often used interchangeably as they represent the same component or have been superseded

and 6 HP models from 1979

Thermostat (60°C/140°F) – Fits Mercury/Mariner 75-225 HP (Replaces 8M0175321, 855676004, 8M6010296) 160-430HP check your engine's serial numberProduct Details This Thermostat (60C 140F) Fits Mercury Mariner 75 225 HP Outboard Engines (Replaces 8M0175321, 855676004, 8M6010296) is a crucial component for maintaining optimal engine temperature in Mercury and Mariner outboard engines. It is designed for a precise fit on 75 HP, 80 HP, 90 HP, 100 HP, and 225 HP 4 stroke models across various serial number ranges. It serves as a direct interchange for Mercury part numbers 855676004, 8M0175321,