Faucet Cartridge Finder

Not sure which faucet cartridge you need, or how to get the old one out without cracking the valve? Answer a few quick questions and we’ll point you to the likely cartridge and the correct removal tool — and we’ll be honest about when to confirm the model before buying, and when to stop and call a pro.

How this finder works

It is a symptom-first decision tree built from manufacturer cartridge specifications and real repair experience. You answer a few plain-English questions about your fixture, and it narrows to the likely part and the correct removal tool. It is deliberately conservative: at every step where forcing a stuck part could crack the valve body and turn a roughly $25 fix into a $1,500+ in-wall repair, it tells you to stop — and when the honest answer is to call a pro, it says so. It points you to the likely part, not a guarantee, so it always reminds you to confirm the exact model stamped on the old cartridge before you buy.

It currently covers sink and kitchen faucets, shower and tub valves, and toilets, across Delta, Moen, Kohler, American Standard, and Price Pfister. No sign-up, no email wall, and no ads.

Not sure of your brand or model? Identify it first

The finder works best once you know your fixture’s brand and rough model. If you are not sure, start with the matching identification guide — each one walks you through the tells (logo, handle shape, escutcheon, the stamp on the old part) so you can answer the finder’s questions with confidence:

• How to identify your faucet brand and model — the place to start for any sink or kitchen faucet, even with no visible logo.
• Delta cartridge identification — match your Delta shower or faucet cartridge by series.
• How to identify your shower valve and cartridge — Moen, Delta, Kohler and more, by valve type.
• How to identify your toilet brand and model — for fill valves, flappers, and flush parts.

Dedicated Moen and Kohler cartridge identification guides are on the way; until they land, the shower-valve guide above covers both.

Jump straight to your fixture

Already know what you are fixing? These deep links drop you directly into the right flow — handy to share in a forum reply or a text to a neighbor:

• Sink or kitchen faucet
• Shower or tub valve
• Toilet

Link to or embed this tool

This finder is free to use and free to link. If it saved you a trip to the hardware store, help a neighbor find their part: link to plumbingbythebook.com/faucet-cartridge-finder, or deep-link a specific fixture with #faucet, #shower, or #toilet. Bloggers, forum moderators, and property managers are welcome to reference it in a resource list or how-to — no permission needed.