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Hex Cap Bulb Sensor 6600-167 - Bubbles Supply

Hex Cap Bulb Sensor 6600-167

Part #: 6560-423

$58.20
In stock — ships today
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Also replaces

6600-167
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this sensor

The Sundance Spas Hex Cap Bulb Temperature Sensor (6600-167) is an OEM replacement part designed to accurately monitor water temperature in your Sundance spa system. This genuine sensor features a distinctive hex cap design with white plug connector, ensuring precise temperature readings that keep your spa operating safely and efficiently.

This OEM sensor directly addresses common spa error codes including HH (high temperature), ICE (low temperature), and OH (overheat) conditions that can disrupt your spa experience. At Bubbles Supply, we guarantee an exact fit with same-day shipping and back every sensor with our comprehensive 1-year warranty. The hex cap bulb design makes identification straightforward during replacement. Always verify your existing sensor's plug color and cap style match before installation to ensure proper system operation.

Exact part number

6560-423

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 6600-167
  • bulb sensor
  • hex cap temperature sensor
  • hi-limit sensor
  • spa water temp sensor
  • thermowell sensor

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:

  • HH error code displayed on topside panel
  • OH (overheat) error code triggering spa shutdown
  • ICE warning code appearing in cold weather
  • Spa overheating or not reaching set temperature
  • Inaccurate water temperature readings
  • Spa cycling on and off erratically due to false temp signals

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

Before you buy — quick checklist

  • Confirm your existing sensor has a hex cap housing — compare physically before ordering
  • Match the plug connector color (white) to your current sensor's connector
  • Verify this OEM part number 6600-167 appears on your existing sensor or in your spa's parts manual
  • Check that error codes (HH, OH, ICE) are not being caused by a separate hi-limit sensor or control board fault before replacing

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

Install difficulty: Easy — DIY-friendlyTypically 15-30 minutes

What's in the box

  • Hex cap bulb temperature sensor (6600-167)
  • White plug connector (pre-attached)

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

Warranty

1 year manufacturer 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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