Amazon.com: (2-Pack) Replacement Threaded to Clamp Style Hose Adapter for Intex Pool Sets with 1.5 and 1.25-Inch Hoses - Fits Filter Pumps, Chlorine Generators, and Salt Systems with Threaded Hose Connections :
Replacement Hose Adapter with Collar for Intex 4000 2500 2000 1500 ARU Threaded Connection Pumps Hose Adapter for Plunger - AliExpress