This multi-ribbed belt transmits power from the engine crankshaft pulley to the accessory drives, including the alternator, water pump, and air-conditioning compressor. It sits in the front engine drive system, routing around multiple pulleys to synchronize rotation across the driven components. A worn belt slips under load, causing reduced charging output, overheating, or accessory drive noise. The belt is constructed with aramid tensile cords and a ribbed friction surface to maintain grip under varying tension. On installation, ensure the belt tracks centrally on each pulley and adjust tension to the manufacturer's specification.