
Polaris 3900 Sport Front Axle Block Assembly, 39-440
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Quick overview
- Fits the 3900 Sport Made for the Polaris 3900 Sport pool cleaner.
- Front position This is the front axle block assembly, not the rear.
- Original factory part This is the original factory part 39-440.
- Genuine Polaris number Cataloged as Polaris part number 39-440.
- Assembly form Sold as a complete axle block assembly.
- Wheel drive hardware Holds the front wheel axle in place on the 3900 series cleaner.
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Frequently bought together

3900 Sport Front Axle Block Assembly, 39-440
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Product details
The Polaris 39-440 is the front axle block assembly for the Polaris 3900 Sport pool cleaner.
Fit and compatibility
This is the original factory part for the front wheel axle position on the 3900 series cleaner, and it is a separate part from the rear axle block assembly used on the same cleaner.
What it does
An axle block holds the wheel axle in place within the drive assembly, keeping the front wheel aligned as it turns and carrying load through the assembly.
Why the position matters
The front and rear axle blocks on the 3900 series are different parts, so installing the wrong one will not correct alignment or play at the other end of the cleaner. Confirm you need the front position before ordering.
Before you order
This listing is the front axle block assembly only, sold as Polaris part number 39-440 for the Polaris 3900 Sport pool cleaner.
| Brand | Polaris |
|---|---|
| Manufacturer part number | 39-440 |
| UPC | 738919066991 |
| Type | Front axle block assembly |
| Fits | Polaris 3900 Sport pool cleaner |
| Shipping weight | 0.3 lb |
| Ships | Parcel |
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Questions and answers
What people ask about this product, answered by our pool techs.
Will the 39-440 fit my Polaris cleaner?
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Is the 39-440 an original factory part?
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