This multi-ribbed belt drives the alternator and the fan from the engine crankshaft. It is a 10PK profile belt, meaning it has ten longitudinal ribs that engage with matching pulleys on the driven components. The belt transmits rotational force from the crankshaft pulley to both the alternator and the fan, ensuring the cooling system and electrical charging system operate together. A worn or glazed belt slips under load, causing the alternator to undercharge and the fan to spin below its required speed, which can lead to engine overheating. As a replacement part from Bepco, it is manufactured to match the original belt's rib count and length, so the tensioner and pulley alignment do not require adjustment beyond standard belt replacement.