Inside a cartridge filter, the manifold is responsible for collecting filtered water and keeping the cartridge stack aligned. This Hayward SwimClear CX3030C manifold top is a replacement part for compatible SwimClear filter assemblies where the original manifold has become cracked, warped, or damaged. Replacing a compromised manifold can help reduce debris bypass, improve cartridge sealing, and restore the intended internal flow path. It is a practical part to inspect whenever cartridges are being cleaned or replaced. Replacement manifold top for compatible Hayward SwimClear filters Helps maintain cartridge alignment and filtered water collection Useful for cracked, worn, or damaged internal filter manifolds Supports cleaner filtration and reduced bypass risk Recommended during cartridge service and filter rebuilds