Hayward OEM Cartridge Filter Element for SwimClear C3030 (4-Pack)

This is the Hayward OEM set of four cartridge elements for the SwimClear C3030 filter. Together the four cartridges make up the C3030 filter area of 325 sq ft, and buying them as the CX580XREPAK4 pack gets you the complete load in one order.

Replace all four together

Cartridges in the same tank share the flow, so a fresh set keeps the load even and the pressure predictable. A set is due when a thorough cleaning no longer returns the pressure to its clean starting point, or when pleats tear or end caps crack.

While the head is off

Check the tank o-ring. If it is flattened or nicked, replace it before the filter goes back together.