Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How Long Does an Alternator Belt Last?

How Long Does an Alternator Belt Last?

alternator belt

Your car’s alternator is what delivers energy to your vehicle’s battery. It works by means of converting mechanical energy to electrical energy, taking power from the engine’s crankshaft and delivering it to the battery where it is stored. The alternator connects to the crankshaft by means of a belt – either a V-belt, or a serpentine belt. With a V-belt, only the alternator is driven. If your vehicle has a serpentine belt, then other components are also powered. If the alternator belt breaks, then the car battery does not receive a charge, and accessories may not operate properly, if they work at all.

The alternator belt is constantly working, from the time you start your vehicle until the time you turn it off. Like all other automotive belts, it is made of rubber, and that means that over time, it can deteriorate. Usually, you can expect your alternator belt to last 3-4 years. You should have it inspected regularly – a good rule of thumb is to have your mechanic check the alternator belt whenever you have an oil change.

Signs that your alternator belt needs to be replaced include:

  • Fraying, cracking or looseness
  • Headlights and/or interior lights flickering or dimming
  • Engine will not turn over
  • Car stalls
  • Accessories do not work

If you notice signs of wear on your alternator belt, or you experience any of the symptoms noted above, you should have a qualified mechanic check the belt. Have the mechanic replace the failing alternator belt to eliminate any further problems with your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...

Related questions

Q: Power steering unit leak. 2010 Honda Crosstour

Hello. It is rare that the steering rack and the power steering pump needs to be replaced at 60,000 miles. These parts usually last for over 100,000 miles and are not often replaced. I do not think that the steering...

Q: Having problems removing the long bolt in bottom of alternator. I took off the nut and tapped it out til it hit inner fender. 2007 Hyundai Elantra

Hi there. In order to get that bolt out the engine will need to be lifted in order to get clearance. If you do not lift it then it will not come out. You should get some help from a...

Q: Looking for a new battery 2006 Chevy Aveo

Hello - the original battery group for this vehicle is a Group 86. I would recommend battery replacement with that specification battery by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, and replace...