Response to Marion - When you go to a 3 HP EE motor (B844), you will also have to upgrade the impeller to 5074-27E and the diffuser to 5074-13. We also recommend that you replace the seal and gaskets with GOKIT32 or GOKIT32SALT. If you choose not to replace all the gaskets, you will have to change the shaft seal as a minimum. See key # 16 in this Whisperflo parts list. Thereare three options OEM, Generic and Saltwater pools

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