The fastest way to find the correct OEM replacement part is not the dimensions, color, or a photo. It is the appliance model number matched to the manufacturer part number.

A range knob may look the same from the top, but not fit because the opening on the underside doesn't match the switch.  A refrigerator ice maker can look identical to another version but have a different wiring harness. A dryer heating element may fit the same cabinet but have three terminals instead of two.  That is why comparing the model number to the list of models compatible with your part number matters before you place an order.

Start With the Appliance Model Number

The model number identifies the exact appliance built by the manufacturer. It is the best  reference for finding compatible replacement parts, including control boards, pumps, door gaskets, igniters, water inlet valves, and motors.

Do not confuse the model number with a serial number. The serial number identifies the individual unit and its production sequence. It can be essential when a manufacturer changed a component during a model run, but it rarely replaces the model number for a basic parts search.  If you need help looking up a part, send us the serial number too - but the model number is the place to start.

Look for the appliance model number sticker/plate/tag or rating tag before removing the failed part. Common locations include:

• Refrigerators: inside the fresh-food compartment, often on a side wall or ceiling
• Washers and dryers: under the lid, inside the door opening, on the rear panel, or behind the control console
• Ranges, ovens, and cooktops: around the oven door frame, warming drawer frame, or beneath the cooktop
• Dishwashers and microwaves: along the door frame, inner door, or cabinet opening

Copy the model number exactly, including dashes, periods, letters, and digits. A single character can identify a different color, voltage, door configuration, or engineering revision. For example, a Whirlpool model ending in a letter may require a different electronic control board than a nearly identical base model.

If the label is faded, take several well-lit photos from different angles. A phone camera can often capture characters that are difficult to read in person. Do not guess at an unclear letter. A B, 8, D, or 0 read incorrectly can send a search in the wrong direction.

How to Search an Appliance Part Number From a Model

Once you have the complete model number, search it first. If nothing comes up, search using the first 5-6 characters of the model number.  For Kenmore models, try it with a dot after the first three numbers then without.

Then narrow the results by the component name or repair function. Searching a model with terms such as “evaporator fan motor,” or “condenser fan motor” is more reliable than entering a broad phrase like “GE refrigerator fan.”

The model-based parts listing shows the components assigned to that specific appliance. It also helps distinguish parts that appear similar but fit different appliances. A dishwasher may have a drain pump, circulation pump, diverter motor, and water inlet valve. A symptom such as standing water does not establish which one has failed.

Use the manufacturer’s component description to confirm the part’s purpose. If the old part is still installed, compare its mounting points, terminal style, connector location, and any printed number. Those details should support the model lookup, not override it.

Search the Number Printed on the Old Part Carefully

This is a last resort.  A number printed, stamped, or molded onto the failed component can be useful, but it is not always the orderable OEM number. Manufacturers and component suppliers use several identifiers during production. You may find a board number, mold number, engineering code, supplier number, or date code instead of the service replacement number.

Knobs are the best example.  Manufacturers often use the same mold for many different knobs and vary the shaft opening on the underside.  This results in multiple incompatible knobs that look the same on the top, have the same "part number" on the part, but are actually sold under different part numbers.

Search every visible number, but verify the result against the appliance model. If a result does not list your model, stop there and contact us for help. Better yet - send us a picture of the model number tag on the appliance.  Similar-looking parts can have different electrical ratings or firmware. This is particularly important for spark modules, inverter boards, compressor start devices, refrigerator defrost controls, and dryer control boards.

A label with an OEM part number is the best case. Enter that full number without spaces first. If there are no results, try it with spaces or dashes removed. Some catalogs store formatting differently. If the part has a brand name and a number, search both together.

Check for Part Number Substitutions

Appliance manufacturers regularly replace older part numbers with updated versions. This is called supersession. The original number may be discontinued, while a new OEM number is the approved replacement.

A superseded part is not a problem. In many cases, the newer component corrects a known weakness or combines several previous revisions into one replacement. As long as the updated number is listed as a replacement for your original part and your appliance model, it will fit your appliance.

Read the product description for notes about included hardware, installation changes, or required companion parts. A replacement door gasket may need to be warmed and shaped before installation. An updated ice maker may include an adapter harness. A revised drain pump may use a new mounting bracket. These are normal service changes, but they affect what you need to order and how the repair is completed.

Serial number ranges matter when the manufacturer made a mid-production change. If a listing says “serial number beginning with,” “before serial number,” or “for units after,” compare that instruction to the appliance data plate. Do not assume the newest revision fits every unit under the same model number.

Confirm Fit Before Ordering

Before you order, verify three points: your complete model number appears in the part’s compatibility information, the part description matches the failed component, and any notes apply to your unit.

Photos are useful as a final check. Compare connector count, mounting holes, shaft shape, terminal position, and included accessories. However, parts can change without warning.  We update photos when we know the part has changed, but this takes time.

Be cautious with listings described only as “universal” or “fits many models” when the appliance was designed for a specific OEM component. Universal parts have a place in certain repairs, but they can require splicing, calibration, adapters, or altered mounting. For safety-critical and electronically controlled components, the correct factory replacement is usually the better choice.

This matters most with gas ignition parts, thermal fuses, oven sensors, refrigerator controls, washer lid locks, and high-voltage microwave components. A part that physically installs can still operate incorrectly or create a safety issue if it does not meet the appliance’s original specifications.

When the Part Number Is Missing or Unreadable

As long as you have the model number - we can find the part.  If you do not have the model number, the best option is to take the old part to a local supplier.  An online supplier usually won't be able to 100% identify the correct part from the pictures.

If you have narrowed the repair but need help confirming the number, send us a picture of the model number tag with serial number, old-part photos, and any error code together. We can then find you the correct part with no guess work.

A careful part search takes a few extra minutes, but it can save days of return shipping and a second teardown. Start with the model tag, verify the OEM number against the list of compatible models, and treat substitutions and serial notes as part of the repair. The right part is the one built for your appliance, not simply the one that looks close enough.