This Blower Wheel is an OEM replacement part for Whirlpool dryers. The Dryer Blower Wheel is responsible for circulating air during the drying process. It ensures proper functioning and drying efficiency by drawing in air, circulating hot air through the drum, and venting moist air out of the dryer. Dimensions: Depth: 3-1/8 inches Diameter: 8 inches Hub diameter: 7-1/8 inches Number of fins: 20 standard fins Motor shaft diameter: 1/2 inch Motor shaft diameter to the flat side of the shaft: 3/8 inch This part fixes the following symptoms: Reduced drying efficiency Longer drying times Unusual noises or vibrations during operation Overheating of the dryer Clothes remaining damp or excessively hot after the drying cycle Excessive lint build-up or poor airflow from the exhaust vent This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.Part Number W11497304 (AP6994155) replaces 31001317.