Response to Hi, Joshua. Unfortunately, most replacement parts are obsolete for your Purex AH Series Pump so replacing it will be your only option. The pump you have is a high head pump, so you will need a pump like the TriStar VS Pump - SP3202VSP, or the IntelliFlo Variable Speed Pump - 011018. To find out if this pump will meet your pool needs, you will need to calculate the Total Dynamic Head (TDH) of your pool. 

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