Shop for the best Alternator for your vehicle, and you can place your order online and pick up for free at your local O'Reilly Auto Parts.

In principle, any AC electrical generator can be called an alternator, but usually, the term refers to small rotating machines driven by automotive and other internal combustion engines. An …

Find an alternator that fits your car and delivers the same performance as original equipment, or better. We carry long lasting replacements, like Duralast Gold alternators that come with a …

May 9, 2022 · An alternator is a generator of electric power in a car and is a major component of the vehicle's charging system. All cars with an internal combustion engine except for some …

Mar 4, 2025 · It supplies electricity to the battery and electrical system to keep your car alive when the engine is running. As you drive around or idle, the alternator powers key components like …

How do Alternators Work? Your vehicle’s alternator is part of its starting and charging system. Its primary job is to maintain the charge of your car battery. Alternators produce AC power …

Learn how much it costs to replace your alternator, how long they last, and signs that its time for it to be replaced.

Your alternator is a vital part of your vehicle's electrical system. Mounted onto a car or truck’s engine, it converts your vehicle's mechanical energy into electrical energy.

The alternator uses mechanical energy from a drive belt or serpentine belt connected to the engine's crankshaft pulley and converts it into electricity. Alternators power the vehicle's …

Get an estimate today and take your vehicle to your local NAPA Auto Care center for alternator repair or replacement service by an ASE-certified technician.