Newer high efficient motors, such as X13 and ECM motors, have "end caps" that control the motor speeds. These can be removed and replaced separately.Partial List of Units that Use This Item. Hit Ctrl + F and enter your model number for a quick search! Climatek Round Flange Pool Spa Pump Motor 1.5 HP 7-164304-24 8-164304-22 This is a BRAND NEW Climatek Replacement round flange pump motor. Function: An electric motor converts electrical energy into mechanical energy. Replaces Old Part #s: 7-164304-24 8-164304-22 Repair Difficulty Level: Partial List of Units that Use This Item: Hit Ctrl + F and enter your model number for a qu. The item "Climatek Round Flange Pool Spa Pump Motor 1.5 HP 7-164304-24 8-164304-22" is in sale since Sunday, February 28, 2021. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Central Heating & Cooling Systems\Central Furnaces". The seller is "bluestang5" and is located in Louisville, Kentucky. This item can be shipped worldwide.