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C-6350 spa filter equivalents
Part number C-6350 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.
Hot Spring C-6350 cartridge (OEM 1642301-1)
| OEM | 1642301-1 |
|---|---|
| Unicel | C-6350 |
| Pleatco | — |
| Filbur | — |
| Size | 6" × 14", 50 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; CONFLICT/related: Pleatco catalog p.26 lists OEM 1642301-1 as PWK35B (6-3/8" x 14", 35 sq ft) and PWK70B (70 sq ft) - not cross-referenced to Unicel; verify. Measure your old cartridge before ordering.
Sources
- Unicel 2026 Replacement Guide — OEM Cross Reference, PDF p.38; spec table PDF p.11 (PDF)