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4HP 1-1/4" SL x 4-3/16" OD Impeller 310-4190 4.00HP - Bubbles Supply

4HP 1-1/4" SL x 4-3/16" OD Impeller 310-4190

Part #: 310-4190

$61.95
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About this impeller

This 4HP impeller is designed for Waterway Executive spa pumps with 48 and 56-frame motors. The precision-molded component features a 1-1/4" suction line connection and 4-3/16" outer diameter, engineered to restore optimal water flow and pressure in your spa's main circulation system. The distinctive blue dot marking identifies this as a genuine Waterway OEM replacement part.

At Bubbles Supply, we guarantee this impeller will fit your Waterway Executive pump exactly as specified. Every order ships same-day when placed by our cutoff time, and we back each part with our comprehensive 1-year warranty for complete peace of mind. Before installation, ensure your pump is completely drained and power is disconnected – proper impeller alignment is crucial for optimal performance and preventing premature wear.

Exact part number

310-4190

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 4HP pump impeller
  • blue dot impeller
  • Waterway Executive impeller

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

Technical specifications

Horsepower
4.0 HP
Frame size
48 frame, 56Y frame

Common symptoms this part fixes

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

  • Weak or no water flow from jets
  • Pump runs but jets have lost pressure
  • Cavitation noise from pump housing
  • Impeller visibly cracked, chipped, or worn
  • Spa shows DR (drive) error after pump inspection

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

Before you buy — quick checklist

  • Confirm your pump is a Waterway Executive model — frame size (48 or 56Y) must match
  • Verify the suction inlet on your existing impeller measures 1-1/4" SL (spigot)
  • Measure your existing impeller's outer diameter — must be 4-3/16" to confirm fitment
  • Check motor horsepower label — this impeller is rated for 4HP motors only
  • Inspect the volute and seal plate for damage before ordering impeller alone — worn seals often fail alongside a damaged impeller

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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