Cooling system bypass kit – late model
In late model engines, cooling water will sometimes preferentially flow through the bypass loop and result in higher than normal temperature, even with a properly functioning thermostat. The check valve in this kit provides 2 to 3 psi back pressure within the bypass loop which will normally provide enough flow through the block and head to regulate temperature within normal range. A manual valve is also provided to close the bypass more completely if operating conditions require. The kit is designed to work in freshwater cooled and raw water cooled engines.