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 …

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.

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 …

Alternator | O'Reilly Auto Parts

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 alternator's rotor is comprised of a series of magnets that rotates quickly and produces an alternating current (AC), which is converted into direct current (DC) using the rectifier or diode.

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

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.

Choosing an alternator means investing in reliability and peace of mind. Benefits include enhanced battery life, improved electrical system performance, reduced risk of breakdowns, …

Feb 24, 2025 · If your car or truck won't hold a charge, you may need a new alternator. Learn alternator replacement, how to test it and find the best deal.