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MTSII Oval Keypad 650-0371 - Bubbles Supply

MTSII Oval Keypad 650-0371

Part #: 650-0371

$615.88
In stock — ships today
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🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
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Fits these systems

Marquis Spa

Not seeing your system? Send us a photo for a free ID.

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

Before you buy — quick checklist

  • Confirm your spa's control pack is a Balboa MTSII or MTSIIC — check the label on the control box inside the equipment bay
  • Verify this is the oval keypad form factor — Marquis used multiple keypad shapes across different model years
  • Locate your spa's build date or serial number to cross-reference with Marquis compatibility documentation
  • Check the cable connector on your existing keypad — ensure it matches the MTSII communication plug type
  • Determine whether this is a primary or auxiliary (secondary) topside installation before ordering

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

Exact part number

650-0371

Save this for ordering or warranty claims

Common symptoms this part fixes

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

  • Keypad buttons not responding or requiring excessive force
  • Display screen blank or unlit
  • Spa functions unresponsive from topside control
  • Control panel showing garbled or incorrect readout
  • Water or moisture intrusion causing erratic button behavior
  • Auxiliary control station completely non-functional

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

About this topside/keypad

The MTSII Oval Keypad 650-0371 is a genuine Marquis spa spaside control designed for spas equipped with Balboa MTSII and MTSIIC control systems. This auxiliary keypad provides convenient poolside access to your spa's functions and settings.

Built to Marquis specifications, this oval-style control delivers reliable operation and seamless integration with your existing system. At Bubbles Supply, we guarantee an exact fit for your spa with our genuine OEM parts, backed by our comprehensive 1-year warranty and same-day shipping on in-stock items. Whether you're replacing a worn control or adding auxiliary functionality, this keypad ensures consistent performance and user-friendly operation. Verify your current control system model before ordering to ensure proper compatibility with your Marquis spa's control pack configuration.

Also known as / Replaces

This part replaces or is interchangeable with:

  • 650-0371 Topside

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

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

What's in the box

  • MTSII Oval Keypad (650-0371)
  • Communication cable
  • 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.

AI Fitment Assistant

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

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