Marathon Square Flange Pool Spa Pump Motor 3 HP C1449. This is a BRAND NEW replacement for Marathon Square flange pump motor. It is rated at 3HP, 3450 RPM, and 208-230V/115V with a 56Y frame. It replaces the old part numbers listed below. An electric motor converts electrical energy into mechanical energy.In an HVAC system, motors typically turn the air conditioning fan blade and the furnace blower motor. 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! This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Pumps". The seller is "bluestang5" and is located in this country: US. This item can be shipped worldwide.