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1.5HP 3-5/8" SL x 3-3/4" OD Impeller 91693651 1.50HP - Bubbles Supply

1.5HP 3-5/8" SL x 3-3/4" OD Impeller 91693651

Part #: 91693651

$58.81
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Also replaces

91693651
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this impeller

This OEM Aqua-Flo by Gecko impeller is designed for 1.5HP main pumps in hot tubs and spas equipped with FMHP and FMCP pump models. The impeller features precise 3-5/8" shaft length and 3-3/4" outer diameter specifications, with the distinctive yellow dot marking for proper identification. As a genuine Gecko replacement part, it delivers the exact performance characteristics your spa's circulation system requires.

At Bubbles Supply, we guarantee this impeller provides an exact fit for your Aqua-Flo pump assembly, backed by our comprehensive 1-year warranty. Orders ship same-day to minimize your spa downtime and get you back to enjoying perfectly heated, circulated water. Before installation, always verify your existing impeller's dimensions and yellow dot marking to ensure proper compatibility with your pump's housing and motor specifications.

Exact part number

91693651

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 1.5HP spa pump impeller
  • 91693651
  • Aqua-Flo FMCP impeller
  • Aqua-Flo FMHP impeller
  • yellow dot impeller

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

Technical specifications

Horsepower
1.5 HP

Common symptoms this part fixes

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

  • Weak or reduced jet pressure
  • Pump runs but little to no water flow
  • Impeller visibly cracked, chipped, or broken
  • Grinding or rattling noise coming from pump housing
  • Pool of water under pump with no visible seal leak

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

Before you buy — quick checklist

  • Confirm your pump model is an Aqua-Flo FMHP or FMCP — check the label on the pump housing
  • Verify your existing impeller has the yellow dot color marking before ordering
  • Measure your current impeller: shaft length should be 3-5/8" and outer diameter 3-3/4"
  • Confirm motor horsepower is rated at 1.5HP — mismatched HP impellers will cause poor performance or motor damage
  • Inspect the pump seal and diffuser while you have the wet end apart — replace if worn

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

Install difficulty: Medium — Some experience neededTypically 45-90 minutes

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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