Description
Exact-fit replacement for Watkins 39578-03 – this 2.5 Horsepower, 12.0/4.4 Amp dual-speed 56 Frame complete pump delivers reliable performance for your Hot Spring spa.
Physical dimensions: 7 1/4″ across pump face, 7 3/8″ measured from bottom to top of pressure volute side, 15″ back-to-front edge measurement. Both suction and pressure side thread fittings are designated 2″ x 2″ with actual 3″ measurement from thread edge to thread edge.
Important: Many suppliers sell alternative brands that don’t provide precise fitment. This pump guarantees exact compatibility with your Hot Spring tub specifications.
Compatibility Note: Visually similar to Aqua-Flo and CMP pumps – these models are interchangeable when replacing the complete pump assembly.
Understanding Watkins Wavemaster Pumps: Watkins sources pumps from manufacturers rather than producing them in-house. They apply their part numbers to pumps from various suppliers. Our offering provides the identical pump or closest available equivalent from original manufacturers, without Watkins branding. Key difference: our pump excludes the rear exhaust vent modification, allowing proper motor cooling as originally engineered by the manufacturer for optimal end-user performance.
