Aeroflow '-16 AN Water Neck Adapter - Silver Suits 360C Swivel Aeroflow Water Necks

These AN water neck adapters from Aeroflow allow the use of AN hose and fittings for radiator hose applications. Specifically designed for use on all 360-degree swivel thermostat housings from Aeroflow Performance. Simply remove thebarb fitting and screw in one of these AN adapters. -16AN Adapter is 52mm (2-3/16”) from O-ring toAN, -20AN adapter is 54mm (2-1/8”) from O-ring to AN.