New Mercury & Mariner Outboard Thermostats

OBParts offers a comprehensive selection of Mercury & Mariner outboard thermostats and components. Whether you're seeking individual thermostats, complete thermostat kits, or critical accessories like gaskets and housings, our catalog provides both OEM and aftermarket options to ensure precise engine temperature control. All parts are engineered for durability and performance in marine environments, backed by the expertise of Marine Parts Warehouse—based in Scottsville, Kentucky. Start browsing compatible thermostats to maintain or repair your engine’s cooling system today.