Gates 34774 Integrated Housing Engine Coolant Thermostat

The thermostat water outlet assembly is the latest in thermostat design integrated housing thermostat; 180 degree (35/34 x 3/4 x 3-holes) w/seal, jiggle pin opens against the flow of coolant from the water pump the coolant, under water pump pressure, is used to help the reverse poppet thermostat stay closed when cool to reduce leakage