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Jacuzzi OEM 6540-164 spa filter (6CH-961)
Listed for: Jacuzzi Premium J400/J300 Series (open top)
Fits Jacuzzi OEM 6540-164, 6540-476, 6541-383 cited
Ø 6-3/4"L 15-1/2"75 sq ft| Unicel | 6CH-961 |
|---|---|
| Pleatco | PJW60TL-OT-F2S |
| Filbur | not sourced |
| Top | open w/ slots |
| Bottom | 2" SAE thread |
Retailer search links — see disclosure. Verify dimensions before ordering.
Source note: Requires injection molded semi-circular handle (not furnished)
How to confirm this is your filter
Pull your current cartridge and measure it end to end, including any handle, and across the widest point of the pleats. This cartridge measures 6-3/4" in diameter and 15-1/2" long, with a open w/ slots on top and a 2" SAE thread on the bottom. The bottom fitting matters most: a cartridge with the right diameter but the wrong thread or open-end size will not seal in the filter housing, letting unfiltered water bypass the media.
The 75 sq ft rating describes the pleated media area. Jacuzzi housings are designed around a particular cartridge, so choose a replacement with the same size and fittings rather than a larger area rating. Unicel 6CH-961 and Pleatco PJW60TL-OT-F2S are cross-referenced to each other in the Pleatco 2023 catalog, so either should fit the same housing. Jacuzzi has used 3 OEM numbers for this cartridge; any of them should map to the same replacement.
Similar-diameter Jacuzzi cartridges
- C-7304 cartridge (OEM 42-3724-09) — 7" × 13-11/16"
- C-7306 cartridge (OEM 42-3725-08) — 7" × 17-11/16"
- 6CH-960 cartridge (OEM 6540-164) — 6-3/4" × 15-1/2"
Sources
- Unicel 2026 Replacement Guide — OEM Cross Reference, PDF p.41; spec table PDF p.12 (PDF)
- Pleatco 2023 Catalog — Unicel-to-Pleatco cross reference, PDF p.43 (PDF)
Not in sources: no Filbur equivalent sourced; no model-year range in source.