Most modern cars have ditched the old-style V-belts, instead opting for a serpentine belt that provides
mechanical power to several components like the alternator, power steering pump and A/C compressor. The
serpentine belt has a few advantages: it slips less than a V-belt, it saves space underhood by not requiring all
the components’ pulleys to be offset from each other, and it reduces parasitic drag on the engine. We carry the
best serpentine belts available on the market, so you can replace yours in an afternoon (it's a good idea to
replace the belt tensioner as well).
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
from your local store to make the job easier. Read