CX900DA Knob Kit Replacement for Hayward StarClear Plus Includes Two plastic washers One Oring One guide cone One Eclip One locking knob Compatibility Hayward StarClear Plus cartridge filter models C751, C900, C1200 What it helps with Restores secure lid locking and a reliable seal Replaces worn or damaged knob assembly to prevent leaks and misalignment Simple DIY replacement using originalstyle components for proper fit and performance Usage scenarios You notice leaks or a poor seal around the filter lid during operation; with this kit to restore sealing integrity. The locking knob becomes loose or difficult to engage; install this kit to regain confident, easy operation. Routine maintenance or part refresh for StarClear Plus filters in households or light commercial settings to maintain filter performance. CX900G Locking Knob Replacement Kit for Hayward Star Clear Plus Includes Two plastic washers One Oring One guide cone One Eclip One locking knob Compatibility Hayward Star Clear Plus cartridge filter models C900, C9002, C1200, C12002, C12002S, C751 What it helps with Replaces a worn or faulty locking knob to ensure dependable locking and lid integrity Provides a compatible, readytoinstall knob assembly for multiple StarClear Plus units Usage scenarios Upgrading or replacing knob hardware across several StarClear Plus units in a pool facility or maintenance routine Replacing a damaged or missing locking knob after an accidental impact or during a service cycle Enhancing reliability for seasonal pool operation by maintaining secure lids and seals across models listed above