Response to Hello Kent.  The Century 1.5 HP Square Flange 56Y Up Rate Motor - B2854 is the correct motor replacement for the Hayward TriStar SP3210Z1M.   The Tune Up Kit Hayward TriStar/EcoStar - GOKIT81 contains the seals and gaskets necessary to complete the project.  The Impeller Screw - SPX3200Z1 should not need to be replaced if one is present.  The Impeller Ring should be replaced if the current ring shows signs of wear.  if the Impeller Ring shows signs of wear, also check the Diffuser w/ Impeller Ring

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