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.
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R0547400 | Polaris 3900 Cleaner Turbine Gear Assembly
Fits these models (3)
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The Polaris 3900 Turbine Gear Assembly (part number R0547400) is a genuine OEM-grade replacement gear set that restores the drive “engine” of your 3900 pressure-side pool cleaner. This assembly powers the gearbox that converts pressurized water flow into mechanical motion, driving the cleaner’s wheels and enabling it to scrub pool floors, walls, and steps — just like new. Precision-engineered to match original factory specifications, it ensures smooth rotation, reliable torque, and consistent movement throughout cleaning cycles, extending the life of your cleaner without needing a full unit replacement.
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OEM-Authentic Replacement: Genuine Polaris part (R0547400) designed specifically for the 3900 Sport cleaner, ensuring perfect fit and compatibility.
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Restores Full Drive Performance: Rebuilds the internal gearbox “motor,” giving the cleaner back the torque and drive needed to climb walls and cover the entire pool.
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Cost-Effective Repair: Lets you avoid full cleaner replacement — just swap the worn gear assembly to regain original performance at a fraction of the cost.
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Durable Construction: Built to withstand pool water exposure, pressure-side flow, and repeated mechanical cycles for long-term reliability.
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Easy to Install: Drop-in replacement — rebuild your existing gearbox without the need for special tools or professional service, simplifying maintenance.
- Polaris 3900 Sport Pool Cleaners