{"product_id":"polaris3900seriescleanersgearboxassembly39200pls39200","title":"Polaris 3900 Series Cleaners Gearbox Assembly | 39-200","description":"\u003cdiv\u003e\n  \u003ch2\u003ePolaris 39-200 Gearbox Assembly – OEM Replacement for Polaris 3900 Sport \/ P39 Pressure Pool Cleaner\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Polaris \u003cstrong\u003e39-200\u003c\/strong\u003e is a complete \u003cstrong\u003egearbox assembly\u003c\/strong\u003e designed for the Polaris \u003cstrong\u003e3900 Sport\u003c\/strong\u003e\n    (and Polaris \u003cstrong\u003eP39\u003c\/strong\u003e) pressure-side pool cleaner. The gearbox contains the internal gears and bearings that transfer water-driven\n    power into smooth wheel drive and consistent cleaner movement. Replacing a worn gearbox is one of the most effective fixes for drive problems\n    such as slipping, clicking, poor traction, or reduced forward movement.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 39-200\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Gearbox assembly\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCleaner Compatibility:\u003c\/strong\u003e Polaris 3900 Sport, Polaris P39 (verify by your cleaner parts diagram)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Transfers internal drive power to the wheels for consistent movement and coverage\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Gearbox assembly with internal gears\/bearings (complete drive module)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Signs You Need a New Gearbox\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCleaner moves intermittently, stalls, or won’t drive consistently\u003c\/li\u003e\n    \u003cli\u003eClicking, grinding, or “skipping” sounds from the drive area\u003c\/li\u003e\n    \u003cli\u003eWheels slip under load (especially when climbing or turning)\u003c\/li\u003e\n    \u003cli\u003eCleaner performance is poor even after checking pressure, hose leaks, and a clean wall screen\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off the booster pump and remove the cleaner from the pool before servicing.\u003c\/li\u003e\n    \u003cli\u003eInstall the gearbox in the same orientation as the original and ensure all drive connections seat fully.\u003c\/li\u003e\n    \u003cli\u003eWhile open, inspect related wear items (tires, bearings, axles, and drive components) to prevent repeat issues.\u003c\/li\u003e\n    \u003cli\u003eAfter reassembly, verify wheels turn smoothly and the cleaner tracks normally in the pool.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%203900%20sport%20parts\"\u003ePolaris 3900 Sport Parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%20p39%20parts\"\u003ePolaris P39 Parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%203900%20sport%20rebuild%20kit\"\u003ePolaris 3900 Sport Rebuild Kits\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%203900%20sport%20tire\"\u003ePolaris 3900 Sport Tires\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%203900%20sport%20wheel%20bearing\"\u003ePolaris 3900 Sport Wheel Bearings\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%20feed%20hose%203900\"\u003ePolaris 3900 Feed Hose \u0026amp; Hose Parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%20backup%20valve%203900\"\u003ePolaris 3900 Back-Up Valve\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=polaris%20wall%20fitting%20screen\"\u003ePolaris Wall Fitting Screens\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBefore replacing the gearbox, confirm proper booster pump pressure and check the wall fitting screen for clogs.\u003c\/li\u003e\n    \u003cli\u003eSmall hose leaks can mimic gearbox issues—inspect feed hose sections and swivels for spraying or pinholes.\u003c\/li\u003e\n    \u003cli\u003eRinse the cleaner after heavy debris events; grit and sand accelerate wear on moving parts.\u003c\/li\u003e\n    \u003cli\u003eIf the cleaner is still sluggish after gearbox replacement, inspect tires and wheel bearings for drag or binding.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"Polaris","offers":[{"title":"Default Title","offer_id":52589955973436,"sku":"39-200","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/polaris-3900-series-cleaners-gearbox-assembly-39-200-cleaner-parts-7068735.jpg?v=1770850212","url":"https:\/\/aquapoolsupply.com\/products\/polaris3900seriescleanersgearboxassembly39200pls39200","provider":"Aqua Pool Supply","version":"1.0","type":"link"}