Bosch · Microwave part

Wall Oven Selector Switch Knob 00609121

00609121No photo on file
Match this part by its number, not by appearance.

Reference price$61.08

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

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Part number
00609121
Brand
Bosch
Made for
Microwave
Fits
10 models
  • Fitment checked against 10 models
  • 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

00609121 is a Bosch replacement part (wall oven selector switch knob) for microwaves. Our fitment data lists 10 models that use it.

This selector switch knob (part number 00609121) is for wall ovens. Selector switch knob 00609121 lets you control the oven settings and temperature. Remove the knob by pulling it straight off its post.

How to confirm it has failed

Symptom: A cycle that doesn't advance, an unresponsive display, or the unit not starting at all.

Check: Look for burn marks or a burnt smell near the board or terminals, and check whether buttons and knobs respond -- a unit that powers on but won't cycle often traces back to this group.

Models that use this part

All 10 confirmed models for this part.
ModelBrandApplianceParts on file
HBL5750UC/02BoschMicrowave129
HBL5750UC/09BoschMicrowave128
HBL5750UC/01BoschMicrowave101
HBL5450UC/02Bosch—78
HBL5650UC/02Bosch—59
HBL5450UC/06Bosch—54
HBL5450UC/05Bosch—51
HBL5450UC/01Bosch—48
HBL5450UC/04Bosch—46
HBL5450UC/03Bosch—42

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 00609121 fit?

Our fitment data lists 10 models that use 00609121, including HBL5750UC/02, HBL5750UC/09, HBL5750UC/01. Enter your model number in the fit checker on this page to confirm.

How much does 00609121 cost?

The catalog price on file is $61.08 (as of 2026-05). The current Amazon price can differ, so check it before you order.