Hayward CX880XREPAK4 425 Square Feet Cartridge Element Repla

The Verdict

If you own a Hayward C4030 SwimClear filter, you already know the drill: the original cartridge eventually gives out, and you’re staring at a $100+ replacement decision. The CX880XREPAK4 is Hayward’s own OEM answer — and for most pool owners, it’s the safe, sensible choice. But is it the right choice? Let’s break it down.

What You Actually Get

The box contains a single replacement cartridge — no gaskets, no O-rings, no hardware. The element itself measures roughly 26 inches tall with a 7-inch diameter, and the pleated polyester media delivers 425 square feet of filtration surface area. That’s the spec that matters: it’s the same surface area as the original C4030 cartridge, which means your pump’s flow rate and pressure gauge readings stay in the expected range.

Build Quality and Real-World Performance

The first thing you notice handling this cartridge is the rigidity. The ABS end caps are thick, and the center core doesn’t flex when you grip it. That matters more than you’d think — flimsy cartridges can collapse under pressure, especially if you run your pump at higher speeds. The pleats are densely packed and evenly spaced, which translates to consistent water flow across the entire media surface.

In practice, filtration is excellent. The polyester media catches particles down to roughly 10-15 microns — that’s finer than most sand filters (20-40 microns) and comparable to DE filters. Pool water comes out visibly clearer, especially if you’re dealing with pollen, fine dust, or sunscreen residue. One reviewer noted, “My water has never been this clear, and I can go longer between backwashes than with my old sand filter.”

What Buyers Consistently Praise

The dominant theme across the 235 ratings is the fit. Multiple reviewers mention it’s a drop-in replacement — no trimming, no forcing, no swearing. One long-time owner put it plainly: “Fits perfectly on the SwimClear C4030. I’ve bought off-brand cartridges before and they always felt slightly off. This one seats exactly like the factory original.”

The other recurring compliment is longevity. Several reviewers report getting 2-3 seasons out of a single cartridge with regular cleaning, which offsets the higher upfront cost. If you’re diligent about hosing down the pleats every few weeks, this cartridge holds up well.

Where It Falls Short

Let’s be honest about the downsides. The price is the biggest one — this OEM cartridge typically costs 30-40% more than compatible aftermarket options. You’re paying for the Hayward name and the guaranteed fit. If your budget is tight, a well-reviewed aftermarket cartridge can save you real money, though you roll the dice on build quality.

The second issue is maintenance frequency. With 425 square feet of media, this cartridge loads up faster than you might expect, especially if you have trees overhead or a heavy bather load. Plan on cleaning it every 4-6 weeks during peak season. Let it go longer, and your pressure gauge will climb, cutting water flow and straining your pump.

Finally, a few reviewers noted the foam band around the bottom end cap degrades after 2-3 seasons — cracking or peeling away. It doesn’t affect filtration performance (the band is just a cushion), but it’s a sign the cartridge is nearing end-of-life.

Who Should Buy This

• The “set it and forget it” owner: You want a replacement that works the first time, no fiddling. This is your cartridge.
• The quality-focused pool owner: You care about water clarity and don’t mind paying a premium for OEM reliability.
• Anyone replacing a Hayward C4030 cartridge: Stick with the OEM for the first replacement to confirm fit and performance expectations.

Skip it if you’re on a tight budget and willing to gamble on aftermarket compatibility — or if you’re thinking about upgrading to a larger filter system entirely.

FAQ

Q: Will this fit my Hayward C4030 SwimClear filter? Yes, it’s designed specifically for the C4030. It also fits the C4030PLUS and similar models that use the same cartridge size. Check your filter model number before ordering.

Q: How often should I clean this cartridge? Every 4-6 weeks during swimming season, or whenever the pressure gauge reads 8-10 PSI above the clean baseline. A garden hose with a spray nozzle works fine — no need for chemical cleaners unless you have oil or grease buildup.

Q: Can I wash this cartridge with a pressure washer? Technically yes, but use the lowest pressure setting and keep the nozzle at least 12 inches away. High-pressure washing can damage the pleats and reduce filtration efficiency.

The Verdict

Buy it if you want a guaranteed, drop-in replacement with proven filtration performance and a 2-3 season lifespan. The peace of mind is worth the premium.

Skip it if you’re comfortable with aftermarket options and want to save 30-40% upfront — just read the reviews carefully and verify the dimensions.

Rating: 4.6/5 — It’s the gold standard for a reason, even if it costs more. Your pool will thank you.

Editor’s note: The Hayward CX880XREPAK4 is a simple, reliable replacement part that does exactly what it promises. If you’re tired of cloudy water and guessing games with cheap cartridges, this is the fix.

Where to Buy

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