Where to Buy a Replacement Faucet Cartridge
Your options for a replacement faucet or shower cartridge: the manufacturer, a home center, a plumbing supply counter, online listings, or a confirmed match shipped to you. What each is good at, where wrong parts come from, and what to check first.
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Short answer. If the faucet is under warranty, start with the manufacturer: some, like Moen, cover replacement parts at no charge. For a common cartridge you can identify, a home center or plumbing supply counter works, especially if you bring the old one. For older, store-brand, discontinued or unmarked faucets, or when you need to be sure before you order from a jobsite, get the match confirmed first. Most wrong cartridges are bought on a look-alike.
Your options, and what each is good at
| Where | Good for | Watch out for |
|---|---|---|
| The manufacturer | Faucets under warranty; genuine parts for current models | You need the model number; older lines may not be listed |
| Home center | Common cartridges for popular brands, same trip | Limited range; store staff match by eye |
| Plumbing supply counter | Pros with an account; experienced counter staff | Hours, travel from the jobsite, stock varies |
| Online listings | Range and convenience | Titles that name several brands or numbers; look-alikes |
| Confirmed match, shipped | Unknown, older, store-brand or discontinued parts; ordering from the jobsite | Needs a clear photo or measurements |
Check the warranty first
Many faucets carry long warranties, and some cover the parts that fix a drip. Moen’s lifetime limited warranty, for example, says Moen will provide the parts needed to fix a leak or drip free of charge for the original homeowner, and for 5 years for commercial and business purchasers. Other brands have their own terms. Have the model number ready: see where is the model number on my faucet.
Home centers and supply counters
Bring the old cartridge. A person comparing it against the shelf is the oldest identification method there is, and for popular cartridges it works. It gets harder with older faucets, store-brand faucets whose cartridges changed over the years, and discontinued lines, which are exactly the ones that tend to be missing from the shelf.
For plumbers, the supply counter is the traditional route. The cost is the drive and the wait, often in the middle of a service call. That is the workflow CartridgeID was built to shorten: identify from a phone photo at the jobsite, have the replacement shipped to the jobsite or the shop.
Online listings
Wide range, and the most room for error. Three things to check:
- Titles that list several brands or part numbers. Some of these are tools, kits or loose universal fits, not the cartridge.
- Look-alikes. Cartridges that look identical in a photo can differ in diameter, stem splines or which way they turn off. Read the specs, not the picture.
- Hot and cold. Two-handle faucets often take a different part for each side.
Before you buy anywhere: the counter checklist
Have these answers, whichever route you take:
- What kind of valve it is: single-lever cartridge, ceramic disc unit, compression stem, or a ball valve, which takes seats and springs instead.
- The stem tip: spline count or shape.
- Overall length, measured out of the faucet.
- Diameter, especially for single-lever cartridges.
- Which way it turns off, and which side it came from.
- Any extension or adapter on the stem that has to be reused.
Buying from CartridgeID
If you know the part, browse replacement cartridges, stems and rebuild kits. Every product lists the original part numbers it replaces and the specs to check against the one you pulled.
If you do not know the part, send a photo of the cartridge next to the handle and a specialist confirms the exact replacement before anything is charged. If you would rather measure it yourself, start with the CID Finder. For how we source parts, see OEM vs aftermarket cartridges.
Related guides
- Replace the cartridge or the whole faucet?
- Finding a cartridge for a discontinued faucet
- Store-brand faucet cartridges
Common questions
Where can I buy a replacement faucet cartridge?
From the faucet's manufacturer, a home center, a plumbing supply house, online listings, or a specialist who confirms the match and ships the part. If the faucet is still under warranty, start with the manufacturer, because some warranties cover replacement parts at no charge.
Will the manufacturer send a free cartridge?
Sometimes. Moen's lifetime limited warranty, for example, says Moen will provide the parts needed to fix a leak or drip free of charge for the original homeowner, and for 5 years for commercial purchasers. Check your brand's warranty and have the model number and proof of purchase ready.
Can I just take the old cartridge to the store?
Yes, and it is the best thing to bring. Store staff can match common cartridges against what they stock. It works well for popular parts and less well for older, store-brand or discontinued faucets, which are often not on the shelf.
Are online cartridge listings reliable?
Read them carefully. Listings that name several brands or part numbers in the title are sometimes tools, kits or loose fits rather than the cartridge itself. Match on the specs: type, stem splines, length, diameter and which way it turns off, not the title.
What if I do not know which cartridge I have?
Identify it before you buy anything. A photo of the cartridge next to the handle lets a specialist confirm the exact replacement, and if you can measure it, the CID Finder narrows it down by length and spline count.