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AX10A3 Auxilliary Topside G8913 - Bubbles Supply

AX10A3 Auxilliary Topside G8913

Part #: G8913

$127.98
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this topside/keypad

The Balboa AX10A3 Auxiliary Topside (G8913) is a genuine BWG replacement control panel designed for Balboa spa systems requiring auxiliary jet control functionality. This OEM topside controller provides dedicated operation for Jet 3 systems, delivering reliable performance and seamless integration with your existing Balboa control pack setup.

Built to Balboa's exacting standards, this auxiliary topside ensures precise control and long-lasting durability. At Bubbles Supply, we guarantee this genuine part will fit exactly as intended, backed by our comprehensive 1-year warranty and same-day shipping on in-stock items. Professional installation is recommended to ensure proper wiring connections and optimal system performance with your spa's control pack configuration.

Exact part number

G8913

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • AX10A3 Aux Panel
  • AX10A3 Auxiliary Topside
  • G8913 Topside Controller

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:

  • Jet 3 circuit not responding to topside commands
  • Auxiliary topside buttons unresponsive or stuck
  • No display or backlight on auxiliary panel
  • Control pack shows error due to auxiliary topside communication fault
  • Auxiliary panel intermittently losing connection to main control pack

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

Before you buy — quick checklist

  • Confirm your control pack is a Balboa system that supports the AX10A3 auxiliary topside designation
  • Verify your existing auxiliary topside connector type and pin count matches this unit before ordering
  • Check whether your spa requires an auxiliary topside or a primary topside — these are not interchangeable
  • Inspect the wiring harness at the old topside for corrosion or damage that may have caused the original failure
  • Confirm this panel is intended for Jet 3 auxiliary control — if you need a different jet zone, verify compatibility with your control pack model

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

  • AX10A3 Auxiliary Topside Panel (G8913)
  • Mounting gasket or seal
  • Connecting ribbon/harness cable (verify at time of order)

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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