This filler neck is an awesome upgrade for our tucked radiator and compact radiator line of products, as it allows you to add this filler neck to the top port, providing easy access to fill up coolant, add temp sensor, fan switch, overflow tank, etc.
One end of the fitting is -16AN
Other end is 1.38" hose connection
Commonly used in Honda, Toyota, and Subaru
Inlet and outlet uses -20AN female ORB threads
Uses Type A radiator cap
Two 1/8 NPT ports with plugs
100% CNC machined billet aluminum
Perfect upgrade for our radiators!
Note - tucked radiator is a separate part and is not included
