Milodon 16420 - Milodon Water Restrictors

These Water Outlet Restrictors from Milodon replaces the thermostat. They work to slow the flow of coolant through the block and radiator which allows more heat to be absorbed from the block and more heat to be released through the radiator. In cases where the engine has excess cooling capacity, as in an alcohol burning engine, a higher amount of restriction is required than a thermostat can provide. This kit contains restrictors with 1", 3/4" and 5/8" openings to allow tailoring to your particular application.