Thermostat 59078 is for use in MerCruiser 120/2.5L engines (with serial No. 2324347 and higher) with cast iron exhaust manifolds. Also for use in MerCruiser 140/3.0L engines (with serial No. 0L340999 and below) and MerCruiser 165 engines.
140°F thermostat
For use on MerCruiser 120hp 2.5L (serial No. 2324347 and above), MerCruiser 140hp 3.0L (serial No. 0L340999 and below) and MerCruiser 160hp
Easy to replace with common tools. See your owner's manual for removal of non-functioning thermostat.
Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive