What Is A Filler Neck On A Radiator?

What Is A Filler Neck On A Radiator? A radiator filler neck is a cap opening that is installed in between the upper radiator hose fitting and the fitting on the engine. It allows you to fill up the cooling system with coolant by removing the cap.Sep 6, 2018 How do you fill a radiator … Continue reading What Is A Filler Neck On A Radiator?