🚀 New launch promo — 10% off orders over $300. Use code LAUNCH10
Bubbles Supply
Not sure which part you need? Upload a photo and we'll find it. →
J-300 Spaside Control 6600-504 - Bubbles Supply

J-300 Spaside Control 6600-504

Part #: 6600-504

$884.44
In stock — ships today
Qty
🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
Add to B2B order list

Not sure this fits?

Send us a photo of your old part — we'll confirm the right replacement before you order.

Upload a Photo

Also replaces

6600-504
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this topside/keypad

The J-300 Spaside Control 6600-504 is an OEM replacement control panel designed for Jacuzzi J-300 series spas from 2007 and newer. This genuine Jacuzzi control features SMT (Surface Mount Technology) with LED display and supports 2-pump configurations, delivering the precise functionality your spa system requires.

Built to original equipment specifications, this spaside control ensures seamless integration with your existing spa electronics. At Bubbles Supply, we guarantee an exact fit for your Jacuzzi spa system and back every control with our comprehensive 1-year warranty. Most orders ship the same day for minimal downtime. Before installation, verify your spa model year and pump configuration to ensure proper compatibility with this 2-pump LED control system.

Exact part number

6600-504

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 6600-504
  • J-300 series keypad
  • J-300 spaside panel
  • J-300 topside control
  • Jacuzzi 6600-504 control panel

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:

  • Spaside display is blank or unresponsive
  • Buttons not registering when pressed
  • LED display showing garbled or frozen readout
  • Spa functions cannot be controlled from the topside panel
  • Control panel cracked, water-damaged, or physically broken
  • Spa stuck in error mode due to panel communication fault

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

Before you buy — quick checklist

  • Confirm your spa is a Jacuzzi J-300 series model year 2007 or newer
  • Verify your spa runs a 2-pump configuration — this control does not support 1-pump or 3-pump setups
  • Locate your existing control's part number on the back of the panel or in your spa's service manual before ordering
  • Check the ribbon cable or plug connector on your current panel to ensure the replacement connector matches
  • Inspect the mounting cutout dimensions on your spa shell to confirm fit before installation

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

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

What's in the box

  • J-300 spaside control panel (6600-504)
  • Connecting cable or ribbon harness (verify inclusion with shipment)
  • Mounting hardware

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.

🔒 Secure checkout · SSL encrypted·🇺🇸🇨🇦 Serving the US and Canada·↩️ 30-day hassle-free returns·📦 Same-day fulfillment