The serpentine belt has a few distinct advantages over the old system of multiple V-belts to power accessories like the A/C compressor or power steering pump. A single serpentine belt means less parasitic drag on the engine and is a simpler system than using separate V-belts and pulleys. It also is more space-efficient underhood, since components don't have to be offset from each other to accommodate multiple pulleys and belts.

The serpentine belt is wider than older belt designs, with a ribbed surface on one side and fabric cord reinforcement. While the serpentine belt can last for a long time, it will still need to be replaced a couple of times in the life cycle of a vehicle. If you're replacing the serpentine belt, it's a good idea to replace the tensioner at the same time - there's no lubrication point on this idler-style wheel that maintains the belt's proper tension, and it can be prone to failure. Shop Advance for a wide selection of serpentine belts. When you are ready to start the job, you can even borrow a loaner tool kit](/o/loaner-tools) from your local store to make the job go easier.