Skip the auto shop - Our mechanics make house calls

Q: What Does the Accessory Belt on the Front of an Engine Do?

asked by on

What does the accessory belt on the front of an engine do?

The accessory belt is used to turn any accessory by the crankshaft of the engine any time the engine is running, without having a direct mechanical connection. The belt is used by the engine to turn all the accessories at different speeds depending on the pulley sizes used. The types of accessories commonly driven by the accessory drive belts are the water pump, air conditioning compressor, alternator, power steering pump, and air injection pumps. If an engine is equipped with a supercharger then it is most likely driven by an accessory belt.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Timing belt and water pump replacement

The replacement of the water pump was your choice not the dealer. If you requested the water pump to be replaced at the same time the timing belt was replaced to save in labor so you do not have to...

Q: How does power steering affect a car’s handling?

When considering the effects of power steering on a vehicle's handling it is important to realize that there are several types of power steering systems used in today's automobiles. While most vehicles in the past used a type of steering...

Q: What does the color of the engine start/stop switch mean?

Cars equipped with the smart key system and a push-button start have a colored light on the start/stop button. This light can provide you with a lot of information about the condition of the system itself. Here’s a quick rundown:...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...