Kenmore · Microwave part

Kenmore Membrane 6638W2YB21B

6638W2YB21BNo photo on file
Match this part by its number, not by appearance.

Reference price$45.44

Catalog price as of 2026-05; not a live Amazon price.

Check price on Amazon

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Part number
6638W2YB21B
Brand
Kenmore
Made for
Microwave
Fits
1 model
  • Fitment checked against 1 model
  • Purchase, shipping and returns handled by Amazon
  • Free reference data: RepairKitHub does not sell parts

Does it fit your appliance?

Find it on the data plate inside the door or lid. It is not the serial number.

About this part

6638W2YB21B is a Kenmore replacement part (kenmore membrane) for microwaves. Our fitment data lists 1 model that use it.

How to confirm it has failed

Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.

Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.

Models that use this part

All 1 confirmed model for this part.
ModelBrandApplianceParts on file
72189253590KenmoreMicrowave43

Before you order

  • Match the part number character for character, including dashes and trailing letters; a single different character is usually a different part.
  • Confirm your appliance's model number on its data plate and check that it appears in the list above (or use the model lookup tool).
  • If a seller offers a substitute number, check that it appears in this page's replacement list or in the manufacturer's documentation.

Model lookup tool

Frequently asked questions

Which models does 6638W2YB21B fit?

Our fitment data lists 1 model that use 6638W2YB21B, including 72189253590. Enter your model number in the fit checker on this page to confirm.

How much does 6638W2YB21B cost?

The catalog price on file is $45.44 (as of 2026-05). The current Amazon price can differ, so check it before you order.