Description
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.
Complete Service Kit for Watkins 2 HP Pump Models 1019801-03, 0977601-03, 39577-03 - Vendor Code 3536
This comprehensive repair package contains everything needed to restore your Watkins 2 HP circulation pump: impeller assembly, mechanical seal, bearing, silicone lubricant, and seal installation tool. Designed specifically for Vendor Code 3536 pumps used in Hot Spring, Caldera, Tiger River, and Hot Spot spa systems.
Critical Impeller Measurements: The impeller measures approximately 4 1/8 inches across the face (edge to edge), 3 inches from front tip to back sleeve tip, and 7/16 inch from inside vane edge to edge. Some impellers display casting number B351-21 - if yours has this marking, you must verify the edge-to-edge measurement as the manufacturer trims one casting to different horsepower specifications.
The included bearing is engineered to match the motor specifications for this wet end configuration.
IMPORTANT COMPATIBILITY NOTE: This wet end resembles Aqua-Flo wet ends but components are NOT interchangeable between brands. Verify your pump manufacturer before ordering.
Pump union O-rings for 2 5/8 inch center-to-center 2 inch unions available separately for Watkins HotSpring Caldera Tiger River Hot Spot applications.
