This V-belt transmits power from the engine crankshaft pulley to the driven accessory pulley, maintaining the rotational speed of the attached component. It sits in the belt drive system on the front of the engine, where its wedge-shaped profile engages the pulley grooves to prevent slippage under load. A worn or glazed belt will produce a squealing sound at startup or under load and can cause the driven component to operate below its required speed. This belt is manufactured to the original profile dimensions so it seats fully in the pulley groove without riding high or bottoming out. On installation, verify the belt tension matches the specification for the drive system and replace any idler pulleys that show bearing wear.