Sierra Marine Engine Thermostat

Sierra marine engine thermostats are replacement engine thermostats that regulate coolant flow and help hold your marine engine at the correct operating temperature. Sierra offers them for a wide range of outboard, sterndrive and inboard engines.

Key Features:

• Opens and closes at a set temperature to control coolant flow through the engine
• Helps prevent overheating and avoids running too cool, which can cause poor performance and extra engine wear
• Made as an aftermarket replacement for OEM marine thermostats
• Designed for the heat, moisture and corrosive conditions of marine use
• Available in multiple temperature ratings and configurations to suit different engine applications

Sierra is a well-known supplier of marine replacement parts. Replacing a worn or sticking thermostat is a basic maintenance step that supports steady engine temperature, efficient operation and longer engine life. Choose the specific part number for your engine from the listed options.