Response to Hello Kieran.  The Century Motors SP1510Z1M (C48L2N134B1) is a 1.5 total horsepower motor.  The Generic Super Pump™ Style Impeller 1.5 THP - PL2672 is the compatible replacement impeller.  The Tune Up Kit Hayward Super Pump - GOKIT3 contains the pump parts that should be replaced concurrent with the new motor installation. The Super Pump impeller SP1621C is NOT a compatible replacement impeller for this motor/pump.  Attached please find the Hayward Super Pump exploded parts diagram for reference.

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