This neck allows you to fill your cooling system at the intake manifold if your radiator is lower than the intake
Can be flipped to use right or left side upper hose making it perfect for double pass radiators
Includes two 1/4" NPT and one 1/2" NPT hole in the back for water bypass lines or temperature sending units
Accepts standard radiator caps such as 91015620
Gaskets and bolts are included to simplify installation
This neck allows you to fill your cooling system at the intake manifold if you radiator is lower than the intake. It can be flipped over for RH or LH upper hoses, and has two 1/4" npt and one 1/2" npt hole in the back for bypass lines or sending units. Fill cap plate has a 7/16" pipe nipple welded into the overflow area.