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6-1/4" ID x 6-7/16" OD O-Ring 805-0164 - Bubbles Supply

6-1/4" ID x 6-7/16" OD O-Ring 805-0164

Part #: 805-0164

$11.49
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this seal/gasket

This genuine Waterway O-ring (805-0164) provides a reliable seal for EX2 pump systems, measuring 6-1/4" inner diameter by 6-7/16" outer diameter. This OEM replacement part ensures proper sealing between pump components, preventing water leaks and maintaining optimal spa performance.

Built to Waterway's exacting standards, this O-ring delivers the exact fit your spa demands. We guarantee precise fitment and back every part with our comprehensive 1-year warranty. Most orders ship the same day for minimal downtime. Before installation, clean all mating surfaces thoroughly and apply a thin layer of silicone lubricant to ensure proper seating and prevent premature wear.

Exact part number

805-0164

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • pump body seal ring
  • pump volute o-ring
  • Waterway EX2 pump o-ring

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:

  • Water leaking from pump body seam
  • Water dripping at pump volute joint
  • Loss of prime due to air ingestion at pump housing
  • Visible seepage around pump casing mating surfaces

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

Before you buy — quick checklist

  • Measure your existing o-ring's inner and outer diameter to confirm 6-1/4" ID x 6-7/16" OD match
  • Confirm your pump is a Waterway EX2 series before ordering
  • Inspect the o-ring groove in your pump volute for damage or corrosion — a damaged groove will cause a new o-ring to fail prematurely
  • Have silicone lubricant on hand before starting — do not use petroleum-based grease on o-rings

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

Install difficulty: Easy — DIY-friendlyTypically 15-30 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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