Darlly 81757 Pool Filter Cartridge
Replaces Unicel C-8317 · Pleatco PXST175
- Diameter × length
- 8-15/16" × 23-5/16"
- Filter area
- 175 sq ft
- End caps
- 4" Open w/ molded gasket / 4" Open w/ molded gasket
Pool and spa businesses in Florida, Georgia, South Carolina, Alabama, Mississippi, Louisiana and Texas order through their Grit Game rep. Everywhere else, contact Darlly Filtration directly.
Darlly 81757 is a 175 sq ft pool filter cartridge, 8-15/16" x 23-5/16". It replaces Unicel C-8317 and Pleatco PXST175.
Specifications
| Darlly part number | 81757 |
|---|---|
| Outside diameter | 8-15/16" |
| Length | 23-5/16" |
| Top end cap | 4" Open w/ molded gasket |
| Bottom end cap | 4" Open w/ molded gasket |
| Filter area | 175 sq ft |
| Type | Pool |
| Darlly description | Hayward X Stream CC1750RE |
Cross-reference
| Brand | Part numbers Darlly 81757 replaces |
|---|---|
| Unicel | C-8317 |
| Pleatco | PXST175 |
Other Darlly cartridges the same size
Same diameter and length. Check the end caps and area before swapping.
Questions
- What is the Darlly replacement for Unicel C-8317?
- Darlly 81757 replaces Unicel C-8317. Both are 8-15/16" in diameter and about 23-5/16" long.
- What Darlly cartridge replaces Pleatco PXST175?
- Darlly 81757 replaces Pleatco PXST175.
- What size is Darlly 81757?
- Darlly 81757 is 8-15/16" in outside diameter and 23-5/16" long, with 175 sq ft of filter area.
Cross-reference checked October 21, 2026 against Unicel's 2026 Replacement Guide, Pleatco's catalog (updated September 2025), filbur.com and darllyfilter.com. A competitor number is listed only when that brand's own data pairs it with the same cartridge size. Always compare the size and end caps of your old cartridge before ordering.
Brand names and part numbers are trademarks of their respective owners and are shown only to identify compatible replacements. Darlly Filtration is not affiliated with or endorsed by them. Cross-reference by The Grit Game, Darlly's sales agency.