Description

Sierra’s 18-3642 Thermostat Kit is designed for use with Mercury/Mariner 40 HP (3 Cylinder) (s/n 1C049739 & Up) outboard engines. Includes (1) Thermostat and (1) Gasket per package. It is interchangeable with Mercury Marine 855676A1. Each Sierra product meets or exceeds the original equipment part it replaces. Fit specific, check part numbers to ensure proper fit.
Designed for use with Mercury/Mariner 40 HP (3 Cylinder) (s/n 1C049739 & Up) outboard engines
Includes (1) Thermostat and (1) Gasket per package
Interchangeable with Mercury Marine 855676A1
Each Sierra product meets or exceeds the original equipment part it replaces
Fit specific, check part numbers to ensure proper fit