Kristin for Model Number FDGB23RGS1 I need a new rotary knob but it says the part is discontinued ?" What can I replace it with so I can turn my dryer on again ?"I'm pretty sure the part # for the rotary knob is - Ap2106141
Answer Kristin, The rotary knob for this unit will be part number 131858004. Read More... Answered by AppliancePartsPros.com | Tuesday, February 21, 2017