140175221039 Genuine Cooktop Control Knob Black for Westinghouse Electric Cooktops WHC642BC WHC742BC WHC942BC WHC322BC

Lost or cracked a knob on your Westinghouse electric cooktop? This is the genuine black control knob, part number 140175221039, also catalogued as A17522103. It's listed for four models, the WHC322BC and WHC642BC along with the WHC742BC and WHC942BC. Being an Electrolux group part, the fit and finish match the original knobs on the rest of the panel, so a single replacement won't look out of place.

Westinghouse cooktop knob slipping or broken

Each knob turns a control spindle behind the panel, and that spindle sets the heat for one cooking zone. When the plastic insert inside the knob wears or splits, it starts to slip on the spindle. The knob then spins without changing the setting, or it pulls off in your hand. Heat and harsh cleaning sprays can also crack or fade the face, which makes the markings hard to read. A missing knob leaves the bare spindle exposed, and that zone becomes awkward and unsafe to adjust.

Part details

• Genuine Electrolux group part 140175221039
• Alternative number A17522103
• Black finish to match the original knobs
• Fits WHC322BC and WHC642BC, as well as WHC742BC and WHC942BC
• Push-on fit over the control spindle

Fitting the new knob

Make sure every zone is off and the glass has cooled down. Pull the old knob straight off the spindle without twisting it or levering against the panel. Line up the flat on the spindle with the flat inside the new knob and press it on firmly. Turn it through its full range to check the markings line up with the off position.

Questions about this part

Will this knob fit my Westinghouse cooktop?

Four models are on file, the WHC322BC and WHC642BC plus the WHC742BC and WHC942BC. Check the model number on the rating label under the cooktop or in your user manual. If your model isn't one of these, get in touch before ordering.