Serpentine belt - WikipediaA serpentine belt (or drive belt) is a single, continuous belt used to drive multiple peripheral devices in an automotive engine, such as an alternator, Your Car's Serpentine Belt | Firestone Complete Auto CareWell, it won't keep your pants up, but it does transport power to your vital automotive components. The serpentine belt is one long, snaking, winding belt 
What Is a Serpentine Belt & When Should You Replace It?Jul 13, 2020 — The serpentine belt is a long rubber belt that transports power to the engine accessories—the alternator, power steering pump, air conditioning