Sandra C Lake Elsinore , CA March 20, 2020 Appliance: Whirlpool Microwave Oven 1.7 Cubic Foot GT4175SPB2 Whirlpool Microwave Gt4175spb2: I ordered the “support” part because the wheel on mine had broken. How to replace Support. When the replacement part arrived, I simply popped it into place. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes