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 …

Automotive alternators are usually belt -driven at 2–3 times crankshaft speed, speeds that could cause a commutator to fly apart in a generator. The alternator runs at various RPM (which varies the …

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 headlights, …

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.

Sep 3, 2025 · Whether you’re just curious or suspect a problem with your car alternator, this guide will help you learn everything you need to know — from how it works, to signs of failure, and whether it’s …

Replacement alternators for cars, which are essentially small generators, are a crucial piece of the electrical system. They maintain the charge on your vehicle's battery by feeding it a regulated current …

Sep 10, 2025 · It’s essentially a small generator that converts mechanical energy into electricity, bolted to the engine and driven by a belt connected to the engine’s crankshaft. Inside, a rotor spins past...

Choose from a wide range of new and remanufactured alternators for any location (upper, lower, primary, auxiliary, etc.). Take a look at our products today and get big savings on a replacement …

Alternator Replacement New Fit for Town & Country 2008-2010, for Grand Caravan 2008-2010, for JEEP WRANGLER 2007-2011 3.8L, for Routan 2009-2010 3.8L, Automotive Replacement …

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 electrical system and …