Unlike a generator, which produces direct current (DC) power, an alternator generates alternating current (AC) power, which is converted to DC for use in the vehicle's systems.

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 alternator that …

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 Limited-Lifetime …

Mar 4, 2025 · Learn how your car's alternator powers electrical components and charges the battery. Discover how it works, signs of a bad alternator, and when to get service.

If it's time for an alternator replacement, NAPA Auto Parts carries a vast supply of alternator repair kits, condensers, bracket clamps and even rectifiers and brushes for all your alternator repair or …

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.

Online shopping for Alternators - Alternators & Generators from a great selection at Automotive Store.

If you notice warning signs such as flickering lights, repeated battery failure, or clicking sounds when starting, don’t wait. Visit your local Express Oil Change & Tire Engineers for fast, reliable starter and …

Nov 18, 2025 · Alternator, Source of direct electric current in modern vehicles for ignition, lights, fans, and other uses. The electric power is generated by an alternator mechanically coupled to the engine, …

Feb 24, 2025 · Here's how to tell if your car needs a new alternator and how to install one yourself. If your car or truck won't hold a charge, you probably need a new alternator. Learn how to test it and …