How to identify a faucet cartridge without measurements or a brand name
Identifying a faucet cartridge without exact measurements or brand details makes it difficult to find the right replacement part. People resort to guessing part numbers from blurry stampings, which risks buying the wrong valve and leaving the sink out of commission.
What the numbers show
Counted from the threads quoted below. How we count
- Most of it landed at once — the busiest month was September 2026, with 15 people.
- This comes up 18.3× more often in r/Plumbing than across the site as a whole.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Taking the old cartridge to a local hardware or home improvement store to compare and find a matchDid this help you?
- 2Measuring the cartridge dimensions before attempting to buy a replacementDid this help you?
- 3Asking online communities for help identifying and locating partsDid this help you?
- 4Searching online retailers and hardware stores based on community suggestionsDid this help you?
- 5Trying similar replacement parts that are slightly longerDid this help you?
- 6Attempting to use Mixet brand replacementsDid this help you?
- 7Visiting any hardware store to find a compatible partDid this help you?
- 8Identifying the part as a generic brand or specific type like a Mixet shower cartridgeDid this help you?
- 9Matching the removed handle adapter up at a home improvement store like Lowe's or Home DepotDid this help you?
- 10Replacing the entire faucetDid this help you?
- 11Asking for identification help on online forums like RedditDid this help you?
- 12Searching online for replacement guides and encountering conflicting informationDid this help you?
- 13Pulling out the cartridge and posting clear pictures with dimensions to identify the partDid this help you?
- 14Replacing the entire faucet instead of trying to find a replacement cartridgeDid this help you?
- 15Taking the old cartridge out to bring to the store for referenceDid this help you?
- 16Looking for generic or third-party replacement hosesDid this help you?
- 17Searching online home improvement store websitesDid this help you?
- 18Asking online communities to identify the valve manufacturer by posting picturesDid this help you?
- 19Closed the main water supply to stop the water flow temporarily.Did this help you?
- 20Calling the manufacturer directly to claim a lifetime warranty replacement shipped to the houseDid this help you?
- 21Bringing the old cartridge to a home improvement store like Home Depot for a free over-the-counter exchangeDid this help you?
- 22Trying reverse image searchDid this help you?
- 23Attempting to replace washers inside the faucetDid this help you?
- 24Spinning off the component to inspect internal partsDid this help you?
- 25Consulting experienced plumbing supply specialistsDid this help you?
- 26Going to multiple hardware stores or plumbing supply shopsDid this help you?
- 27Searching online via plumbing supply websites or AmazonDid this help you?
- 28Replacing the entire shower valve assemblyDid this help you?
- 29Calling around to local supply housesDid this help you?
- 30Reaching out to the brand directly for identificationDid this help you?
- 31Visiting local plumbers merchants instead of big-box hardware stores like ScrewfixDid this help you?
- 32Going to an actual plumbing supply store instead of a big-box storeDid this help you?
- 33Searching online or comparing visual options with plumbing partsDid this help you?
- 34Trying to guess the manufacturer (such as Pfister) based on visual similaritiesDid this help you?
- 35Replacing the entire faucet instead of trying to identify and fix the cartridge.Did this help you?
- 36Replacing just the rubber washer on the end instead of the entire cartridgeDid this help you?
- 37Asking plumbing forums to identify the correct partDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I went to the Canadian home Depot website and only one Delta hose showed up and it was $125 bucks.”source ↗
“Is there really only one expensive replacement part right now and it's the delta original? Is there a cheaper decent option?”source ↗
“This shower faucet is not turning off anymore, I closed the main water supply for now. From my research, the reason is a failing cartridge, and it needs to be replaced. How do I remove the cartridge for replacement?”source ↗
“We broke our knob to the bathroom shower and can’t find another piece like this.”source ↗
“I’m trying to find a replacement for these. I am in the UK and been to Screwfix but the ones they have do not fit.”source ↗
“Has anyone managed to get these exact ones?”source ↗
“Kerox z00615 is what I can make from it, but can anyone confirm / correct me? I didn't get a chance to measure it while I had it out.”source ↗
“Without a measurement it’s hard to tell.”source ↗
“Hello, I’m trying to find this exact shower cartridge for replacement but I’m unable to find it anywhere.”source ↗
“I was wondering if any of you guys can help me find where I can buy this.”source ↗
“Measures 4 inches. I have tried replacing it with a similar ones that are a little longer but they keep failing. Can’t seem to find this exact type with the brass/metal tip.”source ↗
“im not sure how to tell if it is the seat. the hole where the pipe come sout is tiny and i cant see behind it unless i somehow take the the whole shower wall down. I know for sure the new cartridges ive tried have all been longer and havent fit exactly right.”source ↗
“mixet is the brand ive used as a replacement and they've failed as well and havent sat right. they're a bit longer than this original one i first removed.”source ↗
“My parents' single handle shower faucet has stopped putting out cold water and i'm trying to find a replacement for it, and i'm not sure where I can get one, because I can't find any exact matches online.”source ↗
“It doesn’t appear to be able to come apart. I was giving it a solid tug and if it was removable at one point, it is no longer removable. Here’s another photo showing the innards.”source ↗
“Homeowner with a leaky faucet and zero plumbing experience, but going to try to replace the cartridge myself. Haven't been able to figure out what cartridge this is.”source ↗
“Can’t find a brand anywhere on it. Next step is to pop out the cartridge to see what I can find but want to try this first.”source ↗
“Shower is leaking and I'm reading online that you may be able to take the broken cartridge to a plumbing store and they will give you a new one. Any truth to this? Any stores this works at? (Home Depot, Hoke hardware or anywhere else) The new one at Home depot costs about 79.99 so looking if I can save some before going and buying one.”source ↗
“Last time mine went I didn't even leave the house, they mailed me a new one no questions asked and I had it in like 4 days.”source ↗
“Anyone know what this diverter and handle part is called?”source ↗
“Set screw is stripped so can’t remove handle without cutting something.”source ↗
“Unsure where that washer goes. Handle also spins continuously, so wonder if there’s a break in the stem.”source ↗
“We did. None of them fit correctly”source ↗
“We did, Home Depot said they didn’t carry it”source ↗
“There are hundreds of different ones. The picture is blurry, we don’t know the brand, and there’s no measurement for size.”source ↗
“can be hard to find in store as they can look totally different to a nonplumber”source ↗
“What is the cartridge model number for this shower valve? Never heard of this brand before and I want to be sure the cartridge is available for sale in my area.”source ↗
“Is this cartridge serviceable with new o-rings or is it better to replace it? If needing replaced, any idea what the part number is?”source ↗
“I've had this dripping tub faucet, and I was told it was the valve cartridge that needs to be replaced.”source ↗
“It's a Delta, but I don't really know what I'm looking at. Can anyone point me in the right direction of how to replace this?”source ↗
“This part? And how do I identify which cartridge to buy?”source ↗
“Trying to replace a cartridge - can you tell by these photos if I get the right one before I take out the old one?”source ↗
“Got a leaky shower head and I guess I need to replace the valve cartridge? But I don’t know what brand it is.”source ↗
Where this came up
People with this problem also raised
- 24How to remove a stuck kitchen faucet nut
- 4How to identify a kitchen faucet model without looking at it
- 3Can you replace a broken plastic sink hose connector?
- 3Why won't a new bathtub spout fit my existing pipe?
- 27How to get out a stuck faucet cartridge without breaking it?
- 6How to find a replacement for an obsolete plumbing plug