This multi-ribbed belt transmits power from the engine crankshaft to the alternator, water pump, and other auxiliary drives in the engine bay. It sits in the drive system, routing around multiple pulleys to maintain tension and prevent slip under varying loads. A worn or glazed belt causes squealing, reduced alternator output, and eventual belt failure that can strand the machine. Gates manufactures this belt to match the original rib profile and length, preserving the correct tension range for the automatic tensioner. On installation, verify the belt routing diagram and check that the tensioner arm moves freely before releasing it.