Zodiac Jandy Tank Bottom CI/DEV Filters Replacement Kit

The Verdict

If you own a Jandy CL/CLR or DEV cartridge filter, you already know the pain: the tank bottom seals wear, the drain plug strips, and suddenly you’re looking at a $40 part that decides whether your pool stays crystal or turns swamp. The Zodiac Jandy Tank Bottom CI/DEV Filters Replacement Kit targets exactly that failure point — and it solves it cleanly.

What’s actually in the box

You get the molded tank bottom assembly with the integrated drain plug, the sealing gasket, and the necessary mounting hardware. The kit is designed specifically for Jandy CL, CLR, and DEV series filter housings — not a universal “one-size-fits-most” compromise. The molded plastic matches Jandy’s factory dimensions precisely, which matters more than you’d think. Aftermarket generic bottoms often sit slightly proud or need a shim to seat properly; this one drops in flush.

Real-world performance

The critical test for any tank bottom is whether it holds pressure without weeping. The gasket is a proper EPDM rubber compound, not the brittle foam you sometimes see on cut-rate kits. It compresses evenly when you torque the housing clamp, and the drain plug threads engage cleanly — no cross-threading frustration. One reviewer noted, “Fit perfectly on my Jandy CL340. No leaks after a full season.” Another echoed: “Replaced the cracked original in twenty minutes. The included gasket sealed on the first try.”

The polypropylene mesh cartridge elements (if you bought the full kit variant) hold up to regular cleaning with a garden hose. They don’t degrade from standard chlorine levels, though aggressive chemistry — think high stabilizer or persistent algae treatments — will shorten their life. That’s true of any cartridge, but worth flagging.

Where it falls short

The price. This kit commands a premium over generic replacements that will also fit your housing — often 30-50% more. You’re paying for the Zodiac name and the guaranteed OEM fit. For most homeowners, that’s worth it. For someone managing a rental property or multiple pools, the math gets harder.

Also, there’s no printed manual. The product image shows the parts clearly, and installation is genuinely simple for anyone who’s swapped a pool filter before, but a first-timer will want to watch a YouTube video first. One buyer grumbled, “Had to look up the torque specs online — wouldn’t have known the clamp needed 30 ft-lbs otherwise.”

The 4.2-star average across 210 ratings tells the real story: most owners are satisfied, with complaints clustering around price and occasional reports of premature gasket wear on pools with aggressive chlorine programs.

Who should buy this

• DIY pool owners with a Jandy CL/CLR/DEV filter who want a guaranteed-fit replacement without calling a tech
• Anyone replacing a cracked or warped tank bottom — this is the correct OEM-style part, not a gamble
• Skippers: budget-minded buyers who don’t mind researching generic fitment, or anyone with a non-Jandy housing (it won’t work — don’t force it)

Frequently asked questions

Will this fit my Jandy CL340? Yes. The kit is compatible with all CL, CLR, and DEV series filter housings. If your model number starts with those prefixes, you’re good. If you have a different brand, stop — this won’t adapt.

How often should I replace the tank bottom? The bottom itself should last 5-7 years under normal conditions. The gasket and drain plug O-ring are the wear items — replace those every 2-3 seasons or at the first sign of seepage.

Do I need any special tools? Just a flathead screwdriver and a torque wrench for the clamp. The drain plug is hand-tightenable. No pipe wrenches, no sealant required.

The verdict

Buy it if: You own a Jandy filter and want a replacement that fits right the first time, seals properly, and won’t leave you chasing leaks. The OEM precision is worth the premium for most homeowners.

Skip it if: You’re on a tight budget and comfortable measuring generic alternatives, or if your filter housing is damaged beyond the bottom plate — you’ll need a full housing replacement instead.

Rating: 4.2/5 — It does exactly what it claims, with the only real downside being the price premium. For the relief of a leak-free pool season, that’s a fair trade.

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.