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C-8300 spa filter equivalents
Part number C-8300 appears in 1 cited 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.
Caldera C-8300 cartridge (OEM 74817)
| OEM | 74817 |
|---|---|
| Unicel | C-8300 |
| Pleatco | — |
| Filbur | — |
| Size | 8" × 16-1/2", 100 sq ft |
⚠ Unverified / possible conflict: this row has not been fully confirmed against a second source. Gaps: no Pleatco equivalent found in Pleatco 2023 xref p.43; no Filbur equivalent sourced; no model-year range in source. Measure your old cartridge before ordering.
Sources
- Unicel 2026 Replacement Guide — OEM Cross Reference, PDF p.29; spec table PDF p.19 (PDF)