Pentair Clean & Clear Plus 420 Replacement Filter
cartridge filter system · 4 cartridges
4 x 105 sq ft = 420 sq ft total. PCC105 / C-7471 / FC-1977. OEM R173576.
105 sq ft · 7″ OD × 26.0625″ long
Heads up: the Pentair Clean & Clear Plus 420 runs 4 cartridges. Replace them as a set so the new ones aren't carrying load for an old one.
| Pleatco | PCC105 |
| Unicel | C-7471 |
| Filbur | FC-1977 |
Frequently Asked Questions
What filter cartridge does the Pentair Clean & Clear Plus 420 use?
The Pentair Clean & Clear Plus 420, a cartridge filter system, uses the PCC105 (also sold as C-7471, all the same physical cartridge). It takes 4 of them. Confirm the quantity in your owner's manual or by counting the cartridges in the housing when you open it up. Some Pentair models in the same series use a different number of cartridges than others.
How often should I replace the cartridge in my Pentair Clean & Clear Plus 420?
At 105 sq ft the cartridge in a Pentair Clean & Clear Plus 420 has a good amount of media to work with, so 18 months to two years is a fair expectation with balanced water. Go by pressure, not the calendar: when the gauge sits 8 to 10 psi over the clean starting point and a soak won't drop it, put in a fresh cartridge.
How do I clean the filter cartridge in a Pentair Clean & Clear Plus 420?
Turn the pump off and bleed the pressure from the filter tank (open the air relief valve at the top). Then open the housing and pull the cartridges. The Pentair Clean & Clear Plus 420 runs 4 cartridges; if any one of them is dirty, the others are too, so pull all of them. Hose them down at a 45-degree angle between the pleats, working top to bottom. For a deeper clean every few months, soak in a pool filter cleaner solution per the product's dwell instructions, then rinse before reinstalling. Don't use a pressure washer. The high pressure tears pleats permanently.