Polaris 3900 Sport Gearbox Assembly

SKU: 39-200
Top View - Polaris 3900 Sport Gearbox Assembly - ePoolSupply
Side View - Polaris 3900 Sport Gearbox Assembly - ePoolSupply
Top View - Polaris 3900 Sport Gearbox Assembly - ePoolSupply
Front View - Polaris 3900 Sport Gearbox Assembly - ePoolSupply

Polaris 3900 Sport Gearbox Assembly

SKU: 39-200
Regular price $182.95 Sale price $137.95 Save $45
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Polaris 3900 Sport Gearbox Assembly (39-200)

The gearbox assembly is manufactured by Polaris for the 3900 Sport model cleaner. It is made from the same high-quality materials used for the original factory part. Making this a genuine OEM product that you can trust.

This gearbox was designed to work in correlation with a few other components that give it the power and ability to move along and clean the surface of your pool. This assembly sits in-between the frame and bottom housing with the drive sprocket end placed in the middle of the wheel sprockets. So, when it rotates it spins these sprockets as well via the chain, turning the wheels and moving the cleaner around the pools surface fast and efficiently.

This part is black and again is made up of several other parts and attaches itself to the bottom of the frame. One great troubleshooting tip if the cleaner is no longer operating correctly or moving, could be the result of an internal failure in the gearbox assembly. This normally occurs over an extended length of time and use of the cleaner.

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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