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6540-490 spa filter equivalents
Part number 6540-490 appears in 1 cross-reference row below. Each row lists the OEM, Unicel and Pleatco numbers that the source documents treat as interchangeable, plus the cartridge size so you can confirm against your old filter.
The same numbers, on one page, are in the cross-reference lookup. A schedule for this part number, and the buy link, are on the replacement schedule and reorder page. Published intervals by brand are in the replace and clean calculator.
Sundance C-8325 cartridge (OEM 6540-490), 8-7/16" (214 mm) × 18" (457 mm), 125 sq ft. Unicel C-8325, Pleatco PSD125U.
Unicel C-8325
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| OEM | 6540-490 |
|---|---|
| Unicel | C-8325 |
| Pleatco | PSD125U |
| Filbur | FC-2790 |
| Size | 8-7/16" (214 mm) × 18" (457 mm), 125 sq ft |
Sources
- Unicel 2026 Replacement Guide: OEM cross reference (Sundance section), PDF p.59 (printed p.55); spec table PDF p.20 (printed p.16) (PDF)
- Pleatco 2023 Catalog: Unicel-to-Pleatco cross reference, PDF p.47 (PDF)
- Filbur Catalog & Reference Guide: Unicel-to-Filbur reverse cross reference, printed p.65 (PDF p.33) (PDF)
Not in sources: no model/model-year fitment in sources.
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