3721621-1D 4HP Spa Pump Hot Tub Motor, Executive 56 Frame, 230V 2-Speed 3450 RPM, 2" Intake & Discharge Ports

A high-quality spa pump is essential for keeping your hot tub running smoothly, delivering powerful water flow and long-term reliability. The Executive 56 Frame 4HP Spa Pump is engineered for exceptional performance with 2-speed operation and optimized water circulation—ideal for residential hot tubs, spas, and in-ground pools. This model features a pure copper motor and double-shielded ball bearings with moisture-resistant grease, ensuring quiet, low-vibration operation even under demanding conditions. With a larger 2-inch intake and discharge, it provides efficient water movement with reduced noise and improved flow rate. Compatible With: Direct replacement for models requiring a 4HP, 230V, 2-speed spa pump Suitable for many spa brands that use 56-frame wet end pumps Ideal for large residential hot tubs, spas, or swim spas Replaces Part Numbers: 3721621-1D, 372161-0D87, 372161-0D36, 3721621-0D, 372161-0D76, 3721621-1D5A, 3721621-0D85CT, 3721621-0D76VK, 3721621-0D85, ME-40226-20, PF-30-2N22M, PF-40-2N22C, PF-40-2N22M, PF-40-2N22MC, RB817, B235, TT505, 5KCP49UN9314X, 7-187563-02 Packaging Includes: 1 × 4HP Executive 56 Frame Spa Pump (230V, 2-Speed) At ATRACYPART, we’re committed to delivering top-quality spa components and outstanding customer service. If you have any issues or questions, feel free to reach out—we’re here to help!

• 【Powerful Spa Pump for Hot Tubs & Pools】Designed for high-efficiency water circulation, this 4HP spa pump features a 2-inch intake and 2-inch discharge for superior water flow. Ideal for fast refilling and strong jet action in hot tubs, Jacuzzis, and in-ground spa systems.
• 【Heavy-Duty 56 Frame Construction】The Executive wet end is engineered specifically for 56-frame motors, offering greater durability, cooler running temperatures, and extended service life. Built to handle the demands of continuous operation in large spa or pool setups.
• 【Whisper-Quiet Operation with Dual Ball Bearings】Equipped with double-shielded ball bearings and moisture-resistant grease, this 56 frame hot tub pump reduces operational noise and vibration—perfect for residential indoor spa environments seeking quiet performance.
• 【Premium Pure Copper 2-Speed Motor】This 2-speed spa pump motor features pure copper windings and anti-creep bearings, ensuring high conductivity, lower energy consumption, and smoother startup. Switch easily between low-flow filtration and high-flow jet modes.
• 【OEM-Compatible with Broad Replacement Range】Fully compatible with major OEM models such as 3721621-1D, PF-40-2N22MC, ME-40226-20, and more. Rigorously tested to meet performance standards. Backed by responsive customer support and a commitment to product quality.