Faucet/Sink guide
How to Find a Faucet Model Number Before Ordering Replacement Parts
Where to look for faucet model numbers, tags, receipts, and manufacturer lookup tools before buying replacement parts.
Quick answer
Before ordering faucet replacement parts, look for the model number in paperwork first, then check visible tags under the sink, supply-line labels, product boxes, receipts, builder selections, and official manufacturer identification tools. A faucet body mark or a close photo match is helpful, but it is not always enough to choose a cartridge, hose, spray head, aerator, handle kit, or finish-matched part.
Keep the search noninvasive. Use a flashlight, phone photos, and manufacturer support pages. Do not remove handles, cartridges, trim, valves, supply lines, or stuck parts just to look for a number. If a label is hidden behind corrosion, an active leak, old shutoff valves, or tight cabinet access, stop at photos and ask the manufacturer, a plumbing supply counter, or a qualified plumber for help.
What this guide can and cannot help with
This guide can help you collect model-number clues before shopping for parts. It is for documentation, identification, and compatibility research. It does not teach faucet repair, valve work, cartridge replacement, under-sink disassembly, or installation.
That boundary matters because a faucet model search can accidentally turn into a repair if you start loosening supply connections, pulling cartridges, or forcing stuck aerators. The safer goal is to gather enough evidence to identify the part, not to take the fixture apart.
Why the model number matters
A faucet can look simple from the outside while using a very specific cartridge, handle adapter, hose, aerator, spray head, mounting kit, or trim part. Ordering by appearance alone can lead to a part that almost fits but does not seal, thread, clip, or seat correctly.
Before buying parts, try to identify the brand and model family. If you cannot find the exact model number, collect enough information for the manufacturer or a parts counter to narrow it down.
Useful clues include:
- brand name or logo;
- installation year or approximate purchase year;
- kitchen, bathroom, bar, laundry, tub, shower, or wall-mount location;
- one-handle, two-handle, widespread, centerset, pull-down, pull-out, bridge, or touchless style;
- finish name or finish code, if known;
- photos of labels, tags, and visible markings.
Check the paperwork first
The best model-number source is often not on the faucet body. Start with anything left from the original installation:
- installation guide;
- homeowner guide;
- specification sheet;
- product box;
- receipt or invoice;
- builder selection sheet;
- warranty registration email;
- photos from the renovation or real-estate listing.
Manufacturer support pages commonly point owners back to packaging, installation sheets, receipts, or product literature because the exact model number may not be printed where it is easy to see after installation. If you have several bathrooms or matching fixtures, label each document with the room where that faucet is installed so the parts search does not mix up similar models.
Look under the sink with a flashlight
For a kitchen or bathroom sink faucet, open the cabinet and look at the supply lines, mounting hardware, and underside of the faucet. Use a flashlight and take photos rather than reaching into a wet or cramped space blindly.
Places to check include:
- a tag attached to a supply line;
- a label near the hot or cold line;
- a sticker on a mounting shank or bracket;
- a tag near a pull-down hose;
- a UPC or service label left under the sink by the installer.
Delta notes that a sink faucet model number may be found on a supply-line tag, and Moen says newer faucets may have a model-identifying tag attached to the supply lines. If the cabinet floor is wet, the shutoff valves are corroded, or the area smells musty, do not keep reaching around. Photograph what you can see and treat the moisture as a separate service concern.
Check visible brand marks and series clues
Some faucets have a series number, logo, or brand mark on the faucet body. Look at the base, handle, escutcheon plate, drain cap, aerator, or back of the spout.
This may not be the exact model number. Moen explains that a general family series number can be useful when used with faucet images or a replacement-part locator. Treat body markings as clues, not final proof, unless the manufacturer confirms the exact model.
For finish-matched parts, a model family may still be incomplete. Chrome, brushed nickel, matte black, oil-rubbed bronze, stainless, and specialty finishes can use different finish codes. If the finish matters, photograph the faucet in natural light and compare it with the official parts list rather than relying on a shopping-page color name.
Use manufacturer identification tools
After collecting photos, compare them with the manufacturer’s official identification tools or support pages. Start with the brand you can confirm from the faucet, drain cap, aerator, paperwork, or supply-line tag.
Useful photos for identification include:
- full faucet from the front;
- side view of the spout and handle;
- close-up of the handle style;
- close-up of the spray head or aerator;
- photo of any supply-line tag;
- photo of the underside mounting area;
- photo of the cartridge or removed part only if it was already safely removed.
Kohler, Delta, and Moen maintain official support or parts-identification resources. Use those before relying on a generic shopping listing. If a marketplace listing claims compatibility, verify the part number against the manufacturer’s parts diagram or support page before ordering.
Do not assume one brand’s parts fit another brand
Cartridges, handles, hoses, and spray heads are not universal just because two faucets look similar. Even within the same brand, part numbers can vary by model series, finish, production date, or valve type.
Avoid these common ordering mistakes:
- buying by photo match only;
- assuming all single-handle cartridges are interchangeable;
- ordering a hose without checking connector style and length;
- matching only the finish color;
- trusting a marketplace compatibility claim without checking the manufacturer’s part list;
- confusing a collection name with a service part number.
If the part is returnable, keep the packaging unopened until you have compared the official part number and visible fit details. If the faucet is needed daily, avoid creating a situation where the old part is removed and the new part turns out to be wrong.
When you cannot find the number
If the exact model number is missing, make a short identification packet before contacting support or ordering parts:
- Brand name, if known.
- Photos of the faucet from several angles.
- Photos of tags, labels, or numbers under the sink.
- Approximate installation year, if known.
- The part you need, such as cartridge, handle, aerator, hose, or spray head.
- A photo of the failed part, if it has already been removed safely.
- Whether the faucet is kitchen, bathroom, bar, laundry, wall-mount, or tub/shower.
- Any receipt, warranty registration, or builder paperwork.
A manufacturer, plumber, or plumbing supply counter can often do more with a complete photo packet than with a guessed model number.
What not to do
- Do not loosen supply lines, valves, mounting nuts, cartridges, handles, or trim just to search for a label.
- Do not force a stuck aerator, spray head, or handle to look for markings.
- Do not assume a similar-looking online photo proves compatibility.
- Do not mix parts from different brands unless the manufacturer or parts supplier confirms the fit.
- Do not ignore active leaking, swollen cabinet material, mold-like growth, sewage odor, electrical devices under the sink, or shutoff valves that look corroded or unreliable.
When to call a qualified pro or manufacturer support
Call manufacturer support, a plumbing supply counter, or a qualified plumber if the faucet is actively leaking, the cabinet is wet, shutoff valves are stuck or corroded, the faucet is built into a wall or tub/shower valve, the needed part affects a valve or cartridge you are not comfortable identifying, or the official parts diagram does not match what you see.
For rentals, condos, multifamily buildings, warranty-covered fixtures, or recent renovations, check the owner, manager, builder, or warranty paperwork before buying parts. A guessed repair can create avoidable cost or responsibility questions.
Source notes
- Delta Faucet support pages were checked for model-number and product-identification guidance, including the note that some sink faucets have model information on supply-line tags.
- Moen support pages were checked for model-number location guidance and sink faucet identification resources.
- Kohler support and service-part pages were checked for product model-number and replacement-part lookup workflows.