Skip to product information
Spa Pump & Motor Assembly – 4 HP, 230V, Dual-Speed, 56Y Frame, 3711621-1D | Northline Parts

Spa Pump & Motor Assembly – 4 HP, 230V, Dual-Speed, 56Y Frame, 3711621-1D

SKU: NLT2S00634
$434.29 In Stock
$434.29
Sale price  $434.29 Regular price 
Ships for free in 2–4 business days.
This replacement two-speed spa and hot-tub pump is designed for systems using a 56Y-frame, 230V pump assembly referenced by #3711621-1D. Confirm its wet-end orientation and motor nameplate before purchase.
Estimated delivery between
Shop at Northline Parts Best Customer Service Best Online Parts

Let Northline Parts Do the Heavy Lifting for You!

Not sure which part you need? Our team can help you find the right replacement.

Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT

Live Chat: Available 24/7

I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • Hot tubs and spas using 3711621-1D pump configuration
  • 230V dual-speed systems with matching 56Y frame and plumbing unions

Fitment note: We do our best to list compatible models. Confirm the original part number and machine serial number, engine or equipment configuration before ordering.

Product Overview

A failed spa motor can stop jet circulation or run only at one speed, while a leaking seal may damage its bearings.

This replacement addresses the specific component identified in the listing, rather than every part of the larger machine or system. Matching the part number and the original assembly configuration helps avoid an otherwise expensive incorrect repair.

Do not infer compatibility from the listed four-horsepower rating alone. Match amperage, frame, pump wet end, port position and union sizes.

Key Features & Performance

  • <b>Replacement application:</b> This replacement two-speed spa and hot-tub pump is designed for systems using a 56Y-frame, 230V pump assembly referenced by #3711621-1D. Confirm its wet-end orientation and motor nameplate before purchase.
  • <b>Correct component:</b> Spa Pump & Motor Assembly for the applications or exact configuration described above.
  • <b>Selection details:</b> Do not infer compatibility from the listed four-horsepower rating alone. Match amperage, frame, pump wet end, port position and union sizes.
  • <b>Identifying specifications:</b> 4 HP advertised, 230V, dual-speed, 56Y frame.

Specifications

  • <b>Part type:</b> Spa Pump & Motor Assembly
  • <b>OE / manufacturer reference(s):</b> 3711621-1D
  • <b>Northline Parts SKU:</b> NLT2S00634
  • <b>Specification:</b> 4 HP advertised
  • <b>Specification:</b> 230V
  • <b>Specification:</b> dual-speed
  • <b>Specification:</b> 56Y frame

Replaces / Cross-References

Reference part numbers:

  • 3711621-1D

These numbers are supplied for identifying the correct part. Numbers shown here are not automatically proof that differently configured assemblies interchange; check the original part number and equipment parts diagram.

Installation & Fitment Notes

Do not infer compatibility from the listed four-horsepower rating alone. Match amperage, frame, pump wet end, port position and union sizes.

Before ordering or installation, compare the replacement against the original equipment service manual and confirm any electrical, hydraulic, dimensional, model-year or serial-number restrictions. Service procedures should be performed by qualified personnel when specialized equipment or safety-critical systems are involved.

Frequently Asked Questions

Is this an OEM part?

This listing is presented as a replacement part. Manufacturer names and numbers identify compatibility, not a claim that the product is manufactured by the named OEM. For branded finished electronics, verify the actual manufacturer and condition before purchase.

How can I confirm compatibility?

Check the complete equipment model or model/serial number, then compare the removed part and its identifying details. Do not infer compatibility from the listed four-horsepower rating alone. Match amperage, frame, pump wet end, port position and union sizes.

What problem does this part address?

A failed spa motor can stop jet circulation or run only at one speed, while a leaking seal may damage its bearings.

What is included?

The listing covers the component or set named in the product title. Additional hardware, wiring, gaskets, seals, adapters or fluids should not be assumed unless they are clearly specified in the product photographs or supplied contents.

Part Summary

Part: Spa Pump & Motor Assembly

Applications: Hot tubs and spas using 3711621-1D pump configuration; 230V dual-speed systems with matching 56Y frame and plumbing unions

Reference numbers: 3711621-1D

Key specifications: 4 HP advertised; 230V; dual-speed; 56Y frame

Purpose: A failed spa motor can stop jet circulation or run only at one speed, while a leaking seal may damage its bearings.

Northline Parts SKU: NLT2S00634

Keywords: Spa Pump & Motor Assembly, NLT2S00634, 3711621-1D, Hot tubs and spas using 3711621-1D pump configuration, 230V dual-speed systems with matching 56Y frame and plumbing unions, Northline Parts, Spa Pump & Motor Assembly replacement, Spa Pump & Motor Assembly fitment.

Fitment reminder: Do not infer compatibility from the listed four-horsepower rating alone. Match amperage, frame, pump wet end, port position and union sizes.

Customers also purchased