Polaris 3900 Sport WMS Assembly w/ O-ring

Polaris SKU: 39-300
Front View - Polaris 3900 Sport WMS Assembly w/ O-ring - ePoolSupply
Top View - Polaris 3900 Sport WMS Assembly w/ O-ring - ePoolSupply
View of Bottom - Polaris 3900 Sport WMS Assembly w/ O-ring - ePoolSupply
Side View - Polaris 3900 Sport WMS Assembly w/ O-ring - ePoolSupply

Polaris 3900 Sport WMS Assembly w/ O-ring

Polaris SKU: 39-300
Regular price $66.95 Sale price $34.95 Save $32
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Polaris 3900 Sport WMS Assembly w/ O-ring (39-300)

The WMS assembly w/o-ring is a replacement part made by Polaris. It is made from the same high-quality materials as the original factory part. Making this a genuine OEM product.

This WMS assembly is the most important feature of this cleaner. This part uses the water that comes from the return line and disperses it through 3 water jets that are above the center opening. This creates a water vortex that sucks up dirt, debris, and other forms of mulch off your pool's surface and into the super bag above the cleaner.

This part is black and can be found in the bottom housing next to the gearbox assembly or again above the center opening on the bottom of the cleaner.

One great troubleshooting tip is if the cleaner is not moving or operating incorrectly, could be due to the water jets on the WMS being clogged. You can take a fine object like a paper clip or pin and simply inject it into the jets. Moving it around in a circular motion and then running water through them via a garden hose or the hose from a kitchen sink. This clears out any build-up of deposits which should return the power to the cleaner, allowing it to operate properly.

ALL SHIPPING IN THE USA IS FREE - Some restrictions apply

· Most Orders Ship Free "Standard" To USA Domestic Mailing Addresses.

· We proudly ship with FedEx, USPS, UPS, and OnTrac. ***

· Certain items may be upgraded for shipping…ON US!

· Orders above $300 could be required to have signature confirmation

· All Pool Pumps and Pool Vacuums WILL require a signature upon delivery

· Some Expedited Shipping will incur additional handling time if Pre-Order status is displayed ****

***Shipping Carrier is determined upon delivery speed needed for each order. Paid Expedited Shipping will be shipped at the speed requested but Carriers are subject to change without notice.

**** Handling time varies with inventory and availability. Please reach out with any questions or concerns regarding the inventory of your item.


USPS First Class Mail and Priority Mail shipping is NOT GUARANTEED. Displayed transit times are estimates and not Guarantees.

Expedited Shipping via FedEx/UPS: Monday-Friday before 1:00 PM Arizona Time

We do NOT allow changes in address with Carriers after items are shipped.


Weekend deliveries are the future, and we are striving to meet all the needs of our customers. However, the carriers are attempting on rolling the processes on certain zip codes throughout the mainland 48 states only. Restrictions do apply.

Standard and expedited shipping methods through all carriers cannot guarantee Saturday deliveries due to restrictions to certain carrier zoning.

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Los Angeles, CA

Incredible prices & free shipping for name brand products, not cheap knock offs! I placed my order on Sunday and received shipping confirmation on Monday! Filters arrived in the original Pentair Shipping carton the next day. Excellent company and service while saving big over the local pool store and cheap knockoff from large online retailer!

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Outstanding support! Customer service has prompt responses and solutions to your pool needs. I am very happy with a replacement suction vacuum solution that was suggested. I bought it and it shipped to my home in 3 days. Great job and a pleasure doing business with this pool company.

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Outstanding customer service along with very competitive prices. My orders always ship the same day as placed. Almost everything I look for happens to be in stock. Highly recommend.

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These guys are hands down THE BEST....best prices...best advice...best in stock selection...best brand name products! They dont try to sell u stuff you dont need, good honest people!! I have ordered from them multiple times. Lighting fast shipping. AAA+++

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frankly, if i had the option of 10 stars i would give them....

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