Pool Filter Cartridge for Clean & Clear Plus 320 - Replaces CCP320, PCC80-PAK4

The Pentair Clean & Clear Plus 320 R173573 replacement filter cartridge delivers drop-in compatibility and professional-grade filtration without modification or guesswork. Measuring 20-1/16 inches tall with a 7-inch outer diameter and a 3-inch center opening, this cartridge fits the Clean & Clear Plus 320 system exactly as Pentair designed it, using deeply pleated polyester media to trap dirt, pollen, oils, and microscopic debris before they cloud your water. Molded end caps form a watertight seal that forces every gallon through the filtration media instead of bypassing around the edges, so you get truly filtered water with every pump cycle. Cross-referenced as Pleatco PCC80, Unicel C-7470, and Filbur FC-1976, this cartridge offers the same filtration surface area and structural integrity as the original at a better price point. Because the Clean & Clear Plus 320 uses four cartridges as a complete set, ordering all four at once ensures balanced flow and even dirt loading across your entire filter system.

Rinse your cartridges every four to six weeks with a garden hose to knock off surface debris, and replace them every one to two years depending on bather load and environmental conditions. When your pressure gauge climbs 8 to 10 PSI above its clean baseline — typically around 10 PSI for most residential systems — it's time for a rinse or a swap. Installation takes less than ten minutes: turn off the pump, release the tank clamp or unscrew the lid, lift out the old cartridges, drop in the new ones, reassemble, and restart. Fresh filters mean clearer water, lower chemical demand, and a pump motor that doesn't have to strain against clogged media. Keep a spare set on hand so you're never caught mid-season with a pressure spike and no replacement ready to go.

Check the compatibility table below. If your current filter's part number matches any listed model, this is a direct drop-in replacement.