Hayward SPX3200B3 Diffuser (for TriStar / EcoStar Pumps) The Hayward SPX3200B3 is a genuine OEM diffuser assembly designed for use in select Hayward TriStar and EcoStar pool pumps. This diffuser sits between the impeller and housing to channel water flow efficiently and help maintain optimal hydraulic performance and pump priming. Key Features OEM replacement diffuser — ensures proper fit and performance for compatible Hayward pumps. Includes integrated impeller wear ring — helps maintain correct spacing and prolong impeller life. Engineered to evenly distribute flow, reduce turbulence, and support efficient suction & circulation. Compatible with a wide range of pump horsepower ratings (from ¾ HP up to ~3 HP), making it versatile across multiple models. Durable, chemical-resistant construction suitable for standard pool water environments. Direct replacement — easy to install without modifications or additional parts. Specifications Manufacturer: Hayward Part Number: SPX3200B3 Type: Pump diffuser / impeller wear-ring assembly Compatible Pumps: TriStar series SP3200, SP3200EE, SP3200X / EcoStar series SP3400VSP, plus associated single- and multi-speed variants Impeller Space ID: approx. 5.25″ Overall Base Outer Diameter: approx. 6-7/8″ Diffuser Height: approx. 3-5/8″ Mounting Type: 3-pin mounting to pump housing Supported Horsepower Range: 0.75 HP up to 3.0 HP (for compatible pumps) When & Why to Replace Replace the SPX3200B3 if your pump is showing reduced flow, poor priming, cavitation, excessive noise, or after impeller replacement. Installing a fresh diffuser ensures optimal water flow path, maintains proper impeller spacing, reduces turbulence, and helps restore full rated pump performance — especially important on higher-flow or variable-speed systems. Installation Notes To install, drain and safely disable the pump, then open the wet-end housing. Remove the old diffuser (if present), clean the seating surface, and position the SPX3200B3 into place using the 3-pin mounting alignment. Reinstall the impeller, shaft seal, and housing O-rings per manufacturer guidelines, then reassemble. Always ensure gaskets and O-rings are clean and seated properly for leak-free performance.
