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G8390

ML900 Spaside Control G8390

Part #: G8390

$200.15
In stock — ships today
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🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this topside/keypad

The Balboa ML900 G8390 is a 12-button oblong spaside control designed for Balboa ML900 control systems. This OEM replacement control features the standard oblong profile that fits seamlessly into existing cutouts on spa shells equipped with ML900 control packs. The 12-button configuration provides complete control over your spa's essential functions including jets, lights, temperature settings, and filtration cycles.

At Bubbles Supply, we guarantee this G8390 control is an exact fit for your ML900 system, backed by our 1-year warranty and same-day shipping on orders placed before cutoff. This control comes without an overlay, allowing you to reuse your existing overlay or purchase a new one separately to match your spa's specific button layout. Verify your current control's part number and button configuration before installation to ensure proper compatibility with your spa's control system.

Exact part number

G8390

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • Balboa spaside remote
  • G8390 control panel
  • ML900 keypad
  • ML900 spa panel
  • ML900 topside control

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:

  • Buttons not responding or registering incorrect inputs
  • Display showing error codes or blank screen
  • Spa functions unresponsive despite control pack powering on
  • Control panel cracked, water-damaged, or physically broken
  • Incorrect temperature readings due to faulty topside input
  • Spa stuck in a single mode and won't cycle through settings

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

Before you buy — quick checklist

  • Confirm your control pack is the Balboa ML900 — check the label on the control pack box inside the equipment bay
  • Verify your existing topside control is a 12-button oblong configuration — button count and shape must match
  • Note that this control ships without an overlay — plan to reuse your existing overlay or order a compatible overlay separately
  • Check the connector type and cable length on your existing topside before ordering to ensure the harness will reach and mate correctly
  • Locate the part number on the back of your current control and compare it to G8390 before purchasing

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

  • ML900 spaside control (G8390)
  • Retaining nut or bezel hardware (if included by Balboa — verify at time of shipment)

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

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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