This multi-ribbed belt transmits power from the engine crankshaft to the accessory drives, including the alternator, water pump, and air-conditioning compressor. It sits in the front engine drive system, routing through multiple pulleys to maintain tension and prevent slip under varying load conditions. A worn or glazed belt causes chirping noise at idle and reduced alternator output, which can lead to battery discharge during extended field operation. The manufacturer machines the belt to the same rib profile and effective length as the original assembly, so it seats fully in each pulley groove without requiring tensioner adjustment beyond the standard range.