The R0543200 tune up kit is compatible with Polaris 3900 P39 sport robotic swimming pool cleaners models. The R0543200 tune up kit is pre-assembled and easy to install. The rebuild kit is assembled from parts such as feedpipe assembly, feed hose o-ring, one stainless steel chain, one wheel sprocket assembly, one chair tensioner, one front and rear axle, one gearbox assembly, one chain guard, one bumper.
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