Gecko 05334019-5000 Aqua-Flo Spa Pump, XP2E, 3hp, 2spd, 2.5x2", 56F, 230v, Arctic Pump #1 OEM

Gecko 05334019-5000 Aqua-Flo Spa Pump, XP2E, 3hp, 2spd, 2.5x2", 56F, 230v, Arctic Pump #1 OEM

The below part numbers can be subbed for this pump: 
Pak-113050
05334024-5040

This pump is commonly located as shown in the diagram in the gallery.
This pump is the main pump, connected directly to the heater and the filters, can not be substituted for pump 2, 3, 4.