Armstrong Fluid Technology 816665-000 Coupler 320819-301 this is the Factory Authorized

this is the Factory Authorized OEM replacement

101" port size

offering contractors a reliable solution for field service and equipment upgrades

Engineered for seamless integration with ICP furnace parts

Controls draft inducer and blower operations for optimal system efficiency

Armstrong Fluid Technology 816665-000 Coupler 320819-301 this is the Factory AuthorizedOptimize your HVACR system's performance with the Armstrong Fluid Technology 816665 000 Coupler. This high quality sleeve type coupler assembly is a critical OEM replacement part designed for seamless torque transfer between the motor and pump shaft. Engineered specifically for Armstrong Series 1060 and S&H Series circulator pumps, this 5 8" x 5 8" coupler ensures a vibration free connection that extends the operational life of your equipment. Built