R63MWENB-4728 US Motors 4.0 HP 2-Speed Spa Pump 230V 56Y Frame. 3.6" O.D. Fittings, CAT TT506 New Version Replaced Obsolete Original

Aqua-Flo XP3 4.0 HP 2-Speed Spa Pump (56Y Frame, 230V, 3.6" x 3.6")

Another version replaced the obsolete R63MWENB-4728 hot tub pump. It uses a Aqua-Flo XP3 wet end and a 56Y frame motor, the best current matchup for your spa's plumbing setup.

Ships as the new version: the original R63MWENB-4728 pump has been discontinued, so this order ships its current replacement.

Key Specifications

• Horsepower: 4.0 HP
• Speed: 2-Speed (3450 RPM High / 1725 RPM Low)
• Voltage: 230V
• Amperage: 16.4 Amps (High Speed) / 4.8 Amps (Low Speed)
• Frame Size: 56Y Frame
• Plumbing Connections: 3.6" O.D. Intake / 3.6" O.D. Discharge (measured across the openings - edge to edge)
• Wet End: Aqua-Flo XP3

Compatibility & Cross-Reference

• Current Version Replacement For: Obsolete US Motors model R63MWENB-4728 (CAT TT506)
• Fitment Note: This pump has 3.6" O.D. intake and 3.6" O.D. discharge connections. Always measure your existing fittings before ordering.

Frequently Asked Questions (FAQ)

Is the R63MWENB-4728 spa pump obsolete?
Yes. The original R63MWENB-4728 model is discontinued. This 4.0 HP 2-speed 56Y frame pump with 3.6" O.D. fittings is the current version replacement.

Where is the part number located on my hot tub pump?
It is printed on the specification label on the side of the motor. Look at the line marked MODEL to confirm it matches R63MWENB-4728, and CAT. NO. for TT506.

What are the plumbing connection sizes for this pump?
This pump uses 3.6" O.D. (outside diameter) fittings for both the intake and the discharge. When measuring your old pump, measure across the openings - edge to edge.

Questions or not sure it fits? Call 858-210-8062 or text photos of your old pump and motor label to 858-215-4460.