Response to The replacement motor for the C1318 Marathon Electric 1 H.P. Round Flange Motor. Is the A.O. Smith 1 HP Round Flange Up Rate Motor PART# UST1102 click here to view. Remember to replace the Shaft Seal every time you replace the motor. If you need more assistance with the shaft seal as they are specific to the Pump Model. Please send us an email under our Contact and Support Icon.

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