The Grommet is an OEM part for Whirlpool cooktops. This part provides a secure fit and cushioning for the control knobs on the cooktop, ensuring smooth operation and preventing damage to the control panel.   Causes of a bad knob grommet can include general wear and tear, exposure to high temperatures, or damage from frequent use.   Symptoms of a bad knob grommet include: Loose or wobbly control knobs Difficulty in turning the knobs Knobs not staying in place or falling off Visible cracks or wear in the grommet This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.W10854242 (AP5989763) replaces 3180079, 2180079, 4378126, PS11731279.