Locking Knob and CX900DA Pool Filter Knob Kit Key benefits Restores a secure, leak seal at the of the cartridge filter housing by replacing worn or broken knobs and seals. Guides the filter into position for easier reassembly and quicker cleaning cycles. Built for longterm use with materials that resist aging and tolerate temperatures, improving overall filter reliability. What this kit does Replaces the locking knob and related components to stop leaks from the filter head and make lid removal and reinstallation smooth. Includes a guide cone that centers the filter on the threaded rod so the sits correctly and seals reliably. Provides a simple, direct solution that avoids full filter replacement. Compatibility Compatible with Star Clear Plus cartridge filter models C751, C7512, C900, C9002(S), C1200, C12002(S), C1502, C17502(S), and C2002. Confirm your model before . Materials and performance Constructed from quality, ageresistant materials with electrogalvanized metal parts for improved corrosion resistance and temperature tolerance. Designed to maintain function through repeated use and exposure to pool chemicals and sunlight. Easy installation Remove the damaged or worn components from the filter head and install the replacement parts included in the kit. No special tools required for most installations. Verify model fit before starting the . Package contents 1 Guide Cone 2 Washers 1 ORing 1 ERing 1 Filter Head ORing 1 Locking Knob 1 Directional Vent Valve Color: Black and white Supplied as 1 complete set Typical applications and use scenarios Seasonal maintenance: worn knobs and seals during spring startup to prevent leaks and ensure reliable operation through the swimming season. after damage: Swap in the kit when the original locking knob or guide cone cracks, strips, or fails to hold the filter in place. Routine troubleshooting: Use the kit to address persistent ofhousing leaks and make future access for cleaning or cartridge replacement easier. Why choose this kit Targeted that restores original functionality without replacing the entire filter assembly. Clear compatibility listing and a complete set of components to get the filter back in working quickly. Practical, durable parts designed for the operating conditions common to cartridge pool filters. Note Confirm compatibility with your filter model before . Installation requires removing the existing damaged components and fitting the replacements included in the set.