Part reference
Pentair R173576
The Pentair R173576 is a replacement pool filter cartridge for the Clean & Clear Plus 420 filter system.
R173576 is the Pentair part number for the single cartridge that fits the Clean & Clear Plus 420. It replaces the older Pac Fab number 178584. When you buy the complete factory set of four, that set is catalogued as 179135, but each cartridge inside it is an R173576. The cartridge is 26 1/16 inches long with 105 square feet of media.
Specifications
| Length | 26 1/16 in |
|---|---|
| Outer diameter | 7 in |
| Top opening | 3 in |
| Bottom opening | 3 in |
| Filtration area | 105 sq ft |
| System total | 420 sq ft (four cartridges) |
| Media | 4 oz polyester |
How to verify this is the right cartridge
If R173576 is printed on your cartridge end cap or listed on the filter label, this is the correct part. It is an OEM Pentair number, so a match here is definitive.
If you cannot read the cap, measure: 26 1/16 inches long, 7 inches in outer diameter, 3 inch openings top and bottom. Those confirm the 420 size whether or not any number survives.
R173576 and 178584 frequently appear together on the same label. That is expected. R173576 is the current Pentair number and 178584 is the older Pac Fab number for the same single cartridge. The full set of four is Pentair 179135.
Cross-reference
R173576 is the same cartridge as the numbers below. Any of these fits the Clean & Clear Plus 420:
| Brand | Part number |
|---|---|
| Unicel | C-7471 |
| Pleatco | PCC105 |
| Filbur | FC-1977 |
| Pentair OEM (set of 4) | 179135 |
| Pentair OEM (single) | R173576 |
| Pentair / Pac Fab (single) | 178584 |
| Pentair housing | 160301 |
| Aladdin | 20503 |
| Waterway | 817-0106 |
| Excel Filters | XLS-718 |
| Baleen | AK-60431 |
| Darlly | 71053 |
| Unicel (4-pack) | C-7471-4 |
| Pleatco (4-pack) | PCC105-PAK4 |
| Filbur (4-pack) | FC-6470 |
Available from Meridian
We stock this cartridge as a set of four, shipped free anywhere in the US. Confirm the fit above, then order.
Shop the CCP420 4-pack →Why order from Meridian
- Fitment verified before you buy. Every cross-reference and dimension on this page is checked against OEM and aftermarket sources. Match the number or the measurements above and the cartridge fits, the first time.
- One order covers the whole filter. The Clean & Clear Plus takes four cartridges. This is the complete set of four, so you replace all four at once and they wear evenly, not a single you have to buy four times.
- Free shipping, no surprises. The price is the price. Shipping is included anywhere in the US, and fitment questions go to a person at [email protected].
Sold as a set of four. Compare the per-cartridge cost against buying singles, and factor a full season of filtration before the next replacement.