Thermostat Repair Service Kit for Mercruiser 2.5L 3.0L 120 140 165 GM SternDrive Motors 59078T3 family-yamaha-115txr Remove the bearing carrier to

Remove the bearing carrier to access the propeller shaft seals

Water in the gearcase can lead to catastrophic failure if not addressed

Check that the bellows is seated fully on both ends

Replace Oil Filter: Unscrew the old oil filter (16510-96J10) using an oil filter wrench

Complete Assembly: Includes the thermostat

Thermostat Repair Service Kit for Mercruiser 2.5L 3.0L 120 140 165 GM SternDrive Motors 59078T3 family-yamaha-115txr Remove the bearing carrier toThermostat Kit (140F) Fits MerCruiser 120 140 165 HP 2. 5L 3. 0L Engines (Replaces 59078T3) This thermostat kit is engineered for MerCruiser 2. 5L and 3. 0L 4 cylinder engines (120 140 HP) and 4. 1L 6 cylinder engines (165 HP) manufactured between 1964 and 1997. It ensures your engine maintains the correct operating temperature for optimal performance and longevity. This kit serves as a direct replacement for a wide range of OEM and aftermarket parts,