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0.5HP 1-11/16" SL x 3-7/16" OD Impeller 310-8000 0.50HP - Bubbles Supply

0.5HP 1-11/16" SL x 3-7/16" OD Impeller 310-8000

Part #: 310-8000

$39.57
In stock — ships today
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About this impeller

This 0.5HP impeller is designed for Waterway "E"-Series center discharge spa pumps, delivering reliable water circulation for residential hot tubs and spas. Built to Waterway's OEM specifications, this replacement impeller features precise 1-11/16" shaft length and 3-7/16" outside diameter dimensions for seamless integration with compatible pump wet ends.

As Canada's spa parts authority, Bubbles Supply guarantees this impeller will fit your Waterway pump exactly as intended. We back every part with our comprehensive 1-year warranty and ship same-day from our Canadian warehouse for minimal downtime. The durable construction ensures consistent performance and longevity in demanding spa environments. Always verify your existing impeller's shaft length and diameter measurements before ordering, and consider replacing the pump seal when installing your new impeller to prevent future leaks.

Exact part number

310-8000

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 0.5HP wet end impeller
  • center discharge impeller
  • Waterway E-Series impeller

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

Technical specifications

Horsepower
0.5 HP
Port type
Center discharge

Plumbing notes

  • Port type: Center discharge

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

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 water output is significantly reduced
  • Impeller visibly cracked, chipped, or broken
  • Excessive pump noise or vibration during operation
  • Pump cavitating due to worn impeller vanes

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

Before you buy — quick checklist

  • Measure your existing impeller's shaft length — must be 1-11/16" to confirm fitment
  • Measure your existing impeller's outside diameter — must be 3-7/16" to confirm fitment
  • Confirm your pump is a Waterway E-Series center discharge model
  • Verify the horsepower rating on your pump label matches 0.5HP
  • Plan to replace the pump shaft seal at the same time to prevent post-install leaks
  • Have the pump wet end disassembled before ordering to cross-check impeller dimensions

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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