Whirlpool Washer Selector knob, white WP21001239, Replaces 21001239, 35-2673, 35-2940, 35-3961

White plastic washer selector knob with a gray indicator mark, designed to attach to a D-shaped selector-switch shaft.

Is This the Right Part?

Common Symptoms

• Cracked, broken, or missing selector knob
• Selector setting will not set correctly
• Appliance may not start when the selector knob cannot properly engage the switch

Check Before Replacing

• Inspect the knob for cracks, broken retaining features, or a missing gray indicator.
• Check that the appliance's selector shaft is D-shaped and that the knob is intended to fit that shaft.
• With power disconnected, compare the replacement knob's opening and diameter with the original before installation.

Pro Tip

Part Details

Key Features

• White color
• Gray indicator mark
• Plastic construction
• Approximately 1.25 inches in package height/diameter range
• Accepts a D-shaped shaft
• Used on select washers and some dryers

Installation Notes

• Disconnect electrical power before servicing the control area.
• Confirm the selector shaft and knob opening match before pressing the knob into place.
• Do not force the knob if the shaft alignment or shape does not match.

Verified Compatible Models

6543, 6543 REV D, 6543A, 6544A, 6544A REV B, 6643A, 6643A REV D, 6643B, 6740A, 6741A, 6741A71, 6743, 6743A71, 6744A, 6744B

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.