4 HP 230/240 Volt 12 Amps, Single Speed, 56 Frame Motor. Sundance 2.5 HP motor Corrct replacement for the 6500-901, 6500-902, 6500-903
B237 WW 3711621-1. Century A.O. Smith
Waterway Replacement Motor. Sundance® Spas, Jacuzzi® Spas Replacement Motor

• 56 Frame Motor for improved reliability
• Increased strength and cooler operating temperatures
• Quiet operation
• Dual double shielded ball bearings with moisture resistant grease.
  
• Thermally protected motor for greater protection and longevity
• Split capacitor reduces energy consumption
  
• Versatile design can be used in almost all hot tubs using a 56 Frame Thru Bolt Motor
  

This Motor Replaces the Sundance® Spas/Jacuzzi® Spas TheraMax II (05225427, 05225427-2) Motor used on the 6500-901, 6500-902 and 6500-903. Cannot be used on the 6500-352 or LX Pump.

Same as:

• K63MWEWS-4843
• 9352-6946
• 05225427-2
• 093935-023