Whirlpool Part Number 8212355: Knob, Lifter KNOB Works with the following models: Whirlpool KMTT200ER0, Whirlpool KMTT200GC0, Whirlpool KMTT200OB0 Whirlpool KMTT200SS0, Whirlpool KMTT400BW0, Whirlpool KMTT400ER0, Whirlpool KMTT400GC0