This toothed V-belt transmits power between the engine crankshaft and the driven accessory, such as the alternator, water pump, or fan drive. It is a positive-drive belt with teeth on the inner surface that engage matching grooves on the pulleys, preventing slip under load. A worn belt produces a squealing noise at startup or under load and can cause undercharging or overheating. The belt is manufactured by Gates to match the original profile and tooth pitch of the drive system, ensuring correct tension and engagement without requiring a pulley replacement. On installation, verify the belt routing matches the original and adjust the tensioner to the specified deflection.