Independent Supplier & Replacement Part Notice
We are an independent parts supplier and are not affiliated with, sponsored by, or endorsed by Watkins, Hot Spring, Caldera, Tiger River, or Solana. These names and their part numbers are used only to identify compatibility.
We offer replacement parts as alternatives to spa-branded parts. When this listing identifies a part as the same original-manufacturer replacement, it is supplied under the component manufacturer’s branding and part number, which may differ from the Watkins or spa-brand label and number. Other compatible alternatives are identified in the individual product listing. Please review the listed specifications, fitment details, and any installation differences before ordering.
This Watkins 1019801-03 or 39577-03 Vendor Code 3536 2HP Impeller that fits 56 Frame Pump Wet Ends manufactured by Intertek LX Brand only. It is about 4 1/8"" across the face edge to edge, it measures about 3" from the tip of the front to the tip of the sleeve in the back, it also measures 7/16" from the inside of the vane edge to edge. Some of these impellers have a number on them B351-21 if yours does you must measure the overall width of the impeller to get the correct one.
NOTE: This Wet End looks a lot like an Aqua-Flo and a CMP Wet End but they do not interchange see the video for how to tell the difference!
