Polaris Zodiac 3900 Chain Tensioner (39-120) lochinvar Volute gaskets help preserve a

Volute gaskets help preserve a pressure-tight seal between pump housing components and are essential to wet-end reliability

This version is especially useful when the supported system requires the longer 36 inch lead

and this Balboa HAI Hi Volume Suction wall fitting is designed for compatible applications where the original fitting has worn out or no longer feels dependable

and replacing it accurately can make a major difference in installation ease and performance

Useful when the original socket is damaged or worn

Polaris Zodiac 3900 Chain Tensioner (39-120) lochinvar Volute gaskets help preserve aPolaris Zodiac Chain Tensioner [3900] is a replacement part for compatible Polaris and Zodiac pool cleaner systems. This component helps keep the drive chain properly positioned so the cleaner can maintain steady movement during normal operation. When small cleaner parts wear out, even minor fit or movement issues can reduce cleaning coverage, create leaks, or cause the cleaner to move less reliably. Use part number 39 120 to help match this item to