WATER NECK ADAPTER -16 for use with AF64-2034

Aeroflow's 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 the barb fitting and screw in one of these AN adapters. -16AN Adapter is 52mm (2-3/16in) from O-ring to AN, -20AN adapter is 54mm (2-1/8in) from O-ring to AN.