The Idler Pulley Assembly is an OEM part compatible with Whirlpool dryers. It is a crucial component of the dryer's drive system, responsible for maintaining proper tension and alignment of the belt that drives the dryer drum. Measuring 5.5 x 3.5 x 3 inches, this idler pulley assembly typically consists of a pulley mounted on a bracket or arm, which can pivot or move to apply the necessary tension to the belt. Symptoms of a faulty Idler Pulley Assembly include: Loud squeaking or grinding noises during operation The dryer drum not spinning or rotating properly Excessive vibrations or shaking during the drying cycle Visible wear or damage to the belt or pulley components Causes of a bad idler pulley assembly can include bearing failure, physical damage from foreign objects, or normal wear and tear over time. This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore dryer models.Part Number W10837240 (AP5988716) replaces W10547287, W10547290, 3387372, 3388674, 4337602, PS11726337, W10118754, W10118756, W10837240VP.