Armstrong Fluid Technology 816303-317K Impeller Kit 318973-401 Airtight Performance: Prevents HVAC air

Airtight Performance: Prevents HVAC air leaks and maintains critical system pressure for peak efficiency

Using it on lower BTU models will result in over-firing and potential manifold failure

By keeping the crankcase temperature above the system's dew point

significantly reducing the risk of mineral buildup or mechanical failure

Multi-Refrigerant Compatibility: Rated for use with A1 and A2L refrigerants

Armstrong Fluid Technology 816303-317K Impeller Kit 318973-401 Airtight Performance: Prevents HVAC airThe Armstrong Fluid Technology 816303 317K Impeller Kit is a precision engineered OEM replacement part designed to restore the hydraulic efficiency of high performance circulator pumps. This comprehensive kit features a 5. 25 inch Noryl impeller, a high strength thermoplastic known for its exceptional dimensional stability and resistance to corrosion and scaling in demanding HVACR systems. By utilizing an injection molded replacement impeller kit,