The genuine Polaris 39-200 Gearbox Assembly is the mechanical heart of the Polaris 3900 Sport and P39 pressure-side pool cleaners, responsible for translating water pressure into the wheel-driven movement that propels your cleaner across every pool surface. This complete assembly arrives with all internal gears and bearings pre-installed, ready to drop into place between the cleaner's frame and bottom housing. Once seated, it connects to the drive sprocket to deliver smooth, consistent propulsion along floors, up walls, and into corners. Manufactured from premium materials selected for their resistance to high water pressure and chemical exposure, this OEM gearbox restores the reliable mechanical performance your cleaner depends on.

Key Benefits

• Exact match for 3900 Sport and P39: Factory-spec replacement gearbox that drops in with precise fitment for seamless drivetrain restoration
• Pre-assembled gears and bearings: Ships fully loaded with every internal component required to restore complete gearbox operation
• Powers wheel-driven propulsion: Engages drive sprockets to move the cleaner across pool floors, up walls, and through tight spaces
• Built from premium-grade materials: Selected for strength against high water pressure, pool chemicals, and the demands of continuous mechanical operation
• Brings back full cleaning capability: Restores the smooth, reliable navigation needed for thorough debris removal and complete pool coverage

Compatibility

• Polaris Cleaner Models: 3900 Sport and P39

Specifications

• Brand: Polaris
• Part Number: 39-200

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