POOLPURE C-7459 Filter Replaces Jandy CL 340, PJAN85, Ultral

The Verdict

If you own a Jandy CL 340 cartridge filter, you already know the sting of the OEM replacement price. The POOLPURE C-7459 steps in as a direct cross-reference for the Jandy CL 340, PJAN85, and Ultral systems, and with 229 ratings averaging 4.6 stars, it’s clearly earning its keep in backyards across the country. But does “compatible” actually mean “identical”? Not quite — and here’s where the nuance matters.

What’s Actually in the Box

You get one replacement cartridge, wrapped in plastic, with no instructions and no gasket kit. The filter itself measures roughly 26.5 inches tall with a 7-inch diameter — standard dimensions for the CL 340 platform. The pleated polyester media is densely packed at about 45 square feet of surface area, which matches the OEM spec. The end caps are injection-molded ABS plastic, and the center core is rigid enough that you won’t feel it flex when handling a wet cartridge.

Real-World Performance

The filtration performance is genuinely solid. Buyers consistently report clear water within 24 hours of installation. One reviewer noted, “I couldn’t tell the difference between this and the Jandy brand — same clarity, same pressure readings on the gauge.” The polyester media catches fine debris down to the 10-15 micron range, which is exactly what you need for pollen, algae residue, and the general crud that finds its way into a pool.

Build quality holds up under pressure. The pleats are heat-set and resist collapsing, even when you’re blasting them with a garden hose during cleaning. Multiple long-term reviewers mention getting a full season or more out of the cartridge with biweekly rinsing — that’s the same lifespan you’d expect from the OEM part.

Where It Falls Short

The most consistent complaint is dimensional. The POOLPURE is about a half-inch shorter than the genuine Jandy cartridge. Most buyers report it seats fine, but a few mention needing to align the internal O-ring just right to prevent water bypass. One reviewer put it bluntly: “It fits, but you have to fiddle with it — the Jandy drops right in, this one takes a little persuasion.”

There’s also no included O-ring or lubrication, which is a minor annoyance. If your existing O-ring is worn, you’ll need to order that separately. And the packaging is minimal — no foam inserts, just a plastic sleeve. It arrived intact for most, but a couple of reviewers received cartridges with slightly bent pleats from shipping.

Who Should Buy This

This is for the pool owner who knows their filter system and doesn’t mind a minor installation quirk to save 40-50% versus OEM pricing. If you’re comfortable seating a cartridge properly and have a functional O-ring, this is a smart buy. Budget-conscious homeowners with seasonal pools will appreciate the value, especially if you’re replacing filters every year or two anyway.

Skip it if you want a drop-in identical replacement with zero fiddling, or if your filter housing already has a worn O-ring that needs replacing — you’ll want to budget for that separately.

FAQ

Will this fit my Jandy CL 340S?
Yes. The CL 340S and CL 340 use the same cartridge dimensions. Multiple buyers with the S model confirm a proper fit.

How often should I replace this filter?
With normal use and regular hosing, expect 1-2 seasons. If you run your pump 8+ hours daily or have heavy debris, plan on replacing it annually.

Does it come with the O-ring?
No. You get just the cartridge. Check your existing O-ring before ordering, and pick up a replacement if it’s cracked or flattened.

The Verdict

Buy it if you want OEM-equivalent filtration without the OEM markup. Skip it if you need a zero-fuss, identical drop-in replacement or your O-ring is already worn.

The POOLPURE C-7459 delivers 90% of the Jandy experience for roughly half the cost. The fit quirk is real but manageable, and the filtration quality earns its 4.6-star rating. For most pool owners, that tradeoff is an easy yes.

Rating: 4.6/5

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.