Genuine Mercruiser diesel thermostats, available by mail order. Mercruiser diesel thermostats keep your diesel running at the correct temperature and prevent overheating. Thermostats should be cleaned regularly and checked that they open and close correctly by using a kettle. They are made to OEM standards to withstand the harsh environment in which Mercruiser diesel engines operate.
Genuine Mercruiser thermostats are the genuine OEM fitment and should always be fitted to ensure the safe use of your diesel.