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Pump 2 Relay 6660-104 - Bubbles Supply

Pump 2 Relay 6660-104

Part #: 6660-104

$115.92
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this spa pump

The Pump 2 Relay 6660-104 is a genuine OEM electrical component designed for Sundance Spas systems. This critical relay controls the operation of your spa's secondary pump, ensuring reliable water circulation and filtration. As an authentic Sundance replacement part, it delivers the precise electrical specifications and durability your spa requires for optimal performance.

At Bubbles Supply, we guarantee this relay provides an exact fit for your Sundance spa system. Every 6660-104 relay ships the same day you order and comes backed by our comprehensive 1-year warranty for complete peace of mind. When installing, ensure your spa's power is completely disconnected at the breaker before replacing any electrical components, and verify proper wire connections match your system's configuration.

Exact part number

6660-104

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Also known as / Replaces

This part replaces or is interchangeable with:

  • Jet Pump Relay
  • Pump 2 Relay
  • Secondary Pump Relay

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Pump 2 fails to start when jets are activated
  • Jet pump runs continuously and won't shut off
  • Spa controller shows Pump 2 error or fault code
  • Pump 2 speed selection (low/high) not responding
  • Audible click from control box but pump does not energize
  • Intermittent Pump 2 operation or random shutdowns

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your spa's circuit board part number and verify relay 6660-104 is the correct replacement for your board revision
  • Test the relay itself before ordering — use a multimeter to check coil resistance and contact continuity to rule out other causes
  • Inspect the relay socket on the board for burnt pins or corrosion, which may indicate a deeper board failure
  • Verify this is a Pump 2 (secondary/jet pump) issue and not a Pump 1 relay fault — the two relays are typically not interchangeable
  • Check that your spa's control system is a Sundance OEM board — aftermarket boards may use different relay specifications

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium — Some experience neededTypically 30–60 minutes

Warranty

1 year warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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