Micro-Switch 12478

Brand: Kenmore · Appliance: Microwave · Fits: 3 models · Reference price: $2.49

12478 is a Kenmore replacement part (micro-switch) for microwaves. Our fitment data lists 3 models that use it.

When to replace this part

General hardware and mounting parts

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

Other parts for model 74778551

If you are repairing that appliance, these are the most model-specific parts on file for the same model.

• Oil Seal 12489
• PLAIN YOKE 12499
• Bearing Cup 31305
• Bushing 31021
• Craftsman Latch Assembly 31041
• Lift Pin 12452
• WHEEL & TIRE ONLY (LESS BEARINGS) 12471
• Washer 31138C

Reference price and where to compare

The reference price on file for this part is $2.49. It is informational only, not an offer or an Amazon price — RepairKitHub does not sell parts directly.

Compare 12478 listings on Amazon

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