PSD125-2000
125 sq ft replacement filter cartridge • 8.4375″ OD × 18″ long
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PSD125-2000 replacements on Amazon
The buttons below pull up Amazon results for each cross-reference part number. Same physical cartridge, different stickers, often different prices. Cross-shop and pick the cheapest option that has solid recent reviews.
Cross-Reference & Interchangeable Part Numbers
| Brand | Part Number | Type |
|---|---|---|
| Pleatco | PSD125-2000 | Primary |
| OEM | Sundance 6540-490 | Original Equipment |
Always verify dimensions and end-cap type before purchasing a replacement.
Compatible Hot Tubs & Spas
The PSD125-2000 (or any of its cross-references) fits these spa models. Cartridge sizing occasionally shifted between model years, so it's worth confirming against your owner's manual or the cartridge label.
| Brand | Model |
|---|---|
| Sundance | Cameo 1995-2001 |
| Sundance | Optima 1995-2001 |
| Sundance | Marin 1995-2001 |
| Sundance | Altamar 1995-2001 |
| Sundance | Maxxus 1995-2001 |
Frequently Asked Questions
What are the dimensions of the PSD125-2000?
The PSD125-2000 is 8.4375 inches in outer diameter, 18 inches long, with a open top and open bottom. Total filtration area is 125 square feet. Before ordering, pull your existing cartridge and measure it yourself, or check the label inside the housing. OD and length both have to match within about an eighth of an inch, and the end-cap style needs to match exactly so the cartridge seats properly when the lid closes.
What other part numbers are interchangeable with the PSD125-2000?
PSD125-2000 is the same physical cartridge as , plus OEM versions like Sundance 6540-490. Same dimensions (8.4375" × 18"), same open top, same open bottom. The Pleatco, Unicel, and Filbur boxes ship the same media inside, just with different stickers. The only thing to watch is the end-cap style: if a cross-reference has a slightly different cap design, it may not seat right in your housing.
How often should I replace the PSD125-2000?
125 sq ft is plenty of media for a hot tub, so the PSD125-2000 tends to last longer than the small-format spa cartridges. Two adults using the tub a couple times a week can usually get 18 to 24 months out of one before replacement. Monthly hose rinses and a quarterly overnight soak in filter cleaner stretch that out further. Replace it when the pleats won't rinse clean anymore or you start seeing pressure climb that soaking can't fix.
How do I clean the PSD125-2000?
The PSD125-2000 has open ends on both top and bottom, so water flows straight through. Pull the cartridge from the housing and hose it down. Hit the pleats from above at about a 45-degree angle so water rinses debris out instead of packing it deeper, and work top to bottom while rotating the cartridge. Skip the pressure washer. The high pressure tears or collapses pleats, and once that happens you've lost media that doesn't come back. Every few months (or at every water change, whichever comes first), do a deep clean: overnight soak in a hot tub filter cleaner, then a thorough rinse. If your cartridge has a closed end cap, let it dry before reinstalling so you don't trap moisture inside the cartridge core.
Which hot tubs and spas use the PSD125-2000?
The PSD125-2000 is compatible with: Sundance Cameo 1995-2001, Sundance Optima 1995-2001, Sundance Marin 1995-2001, Sundance Altamar 1995-2001, Sundance Maxxus 1995-2001. Confirm against your owner's manual or the label inside the filter compartment, since some brands changed cartridge sizing between model years.
Dimensions
Specifications
| Outer Diameter | 8.4375″ |
|---|---|
| Length | 18″ |
| Top Type | Open (no end cap) |
| Bottom Type | Open (no end cap) |
| Filtration Area | 125 sq ft |
| Primary Brand | Pleatco |
| Part Number | PSD125-2000 |