Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
OEM Polaris Gearbox Assembly 39-200 is a vital replacement part engineered for the Polaris 3900 Sport and P39 pressure-side pool cleaners. This complete gearbox includes the internal gears and bearings required to drive the cleaner’s movement, allowing it to navigate pool surfaces and walls efficiently. Positioned between the cleaner’s frame and bottom housing, the gearbox connects to the drive sprocket, enabling smooth propulsion. Built from high-quality materials, this assembly restores optimal cleaner performance and durability.
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Fits Polaris 3900 Sport and P39 Models: OEM replacement designed for precise fit and reliable drivetrain function
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Complete Gear and Bearing Set: Contains all internal components needed to restore full gearbox functionality
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Drives Cleaner Movement: Engages the wheel sprockets to propel the cleaner across pool floors and walls
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Durable and Long-Lasting Materials: Engineered to withstand high pressure, pool chemicals, and daily use
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Restores Peak Cleaning Efficiency: Ensures smooth navigation and effective debris removal by supporting proper mechanical function
- Polaris Cleaner Models: 3900 Sport and P39





