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. How do you fill a radiator after replacing … Continue reading What Is A Filler Neck On A Radiator?