Hayward Hayward SwimClear C150S Filter Cartridge (CX150XRE) timeclock A piston cap is useful

A piston cap is useful because it helps complete and retain a critical portion of the internal valve assembly while contributing to the durability of the operating mechanism

A part like this is useful because it restores a key front wet-end housing section while also supporting the seal-related interface of the assembly

The SPDT switching style and 7-day programming flexibility make it a strong fit for installations that need more than a simple daily routine

Using a dedicated kit helps reduce wiring guesswork and keeps the repair more aligned with the intended system design

Hayward Hayward SwimClear C150S Filter Cartridge (CX150XRE) timeclock A piston cap is usefulThe Hayward replacement filter cartridge is designed for compatible C150S filter applications where the internal cartridge element needs replacement. A filter cartridge is useful because it traps dirt and debris as water passes through, helping maintain cleaner water and dependable circulation performance. This replacement is especially useful when the original cartridge is torn, collapsed, clogged beyond cleaning, or no longer filtering effectively.