321690 OMC COVER THERMOTAT V-4

Original equipment thermostat cover and housing for OMC Johnson/Evinrude V-4 outboard engines, specifically 115 HP 4-cylinder models from 1980s. Part 321321690 is the factory cooling system component sealing the thermostat body within the V-4 engine block. Genuine OEM part weighing 0.42 pounds; serves as thermal bypass valve housing component. Replacement thermostat cover assembly for cooling system rebuilds on Johnson Evinrude 115 HP and similar displacement V-4 outboards; availability through marine parts specialists.