The 2 HP Waterway Executive 56 #3720821-1D is a durable high performance pump that delivers reliable water flow efficiently. Always select a replacement pump with the same part number as the Waterway part number.
This was a replacement to an Aqua Flo Gecko XP2. The wet end is dimensionally different. The Waterway is 5mm longer both in the front and side connections. Other words the Wet End is longer and wider making it a direct replacement to the XP2 impossible.
Fast service, good quality pump. Runs nice and quiet. Price was very competitive.