Used Alternators
Keep your vehicle powered and your battery fully charged with our rigorously tested, high-output OEM alternators—without paying premium dealership prices.
Understanding the Alternator
The alternator is the heart of your vehicle's electrical system. While your battery starts the engine, the alternator keeps it running by supplying power to your headlights, radio, power windows, and engine control modules, all while recharging the battery. Cheap aftermarket alternators often suffer from voltage drops and premature bearing failure. Purchasing a high-quality used OEM (Original Equipment Manufacturer) alternator ensures you receive the exact electrical output and durable internal windings that your vehicle was engineered to use.
What to Check Before Buying an Alternator
1. Amperage Output
Alternators are rated by amps. Your replacement must match or exceed your original alternator's amperage to safely handle your car’s electrical load, especially if you have aftermarket audio or lighting.
2. Plug and Pin Configuration
Even if an alternator fits the engine block, the electrical connector on the back must match. Count the pins inside the plug housing to ensure seamless communication with your ECU.
3. Pulley Size and Rib Count
The pulley must match your engine’s serpentine or V-belt perfectly. Check the diameter and count the number of grooves (ribs) on the pulley to prevent belt slippage.
4. Mounting Brackets
Mounting points dictate how the alternator bolts to the engine block. Ensure the bolt hole locations align exactly with your existing setup for a secure, vibration-free installation.
Why Buy Your Alternator from Public Auto Store?
At Public Auto Store, we eliminate the risk of buying used electrical components. We source our alternators from an extensive network of premium auto dismantlers. Every unit is physically inspected and matched directly to your vehicle's VIN and engine specifications. By providing genuine OEM alternators, we ensure you get a part with factory-grade voltage regulators, robust copper windings, and durable bearings, getting you back on the road safely and affordably.
Our Guarantee & Warranty
We are committed to providing reliable electrical power for your vehicle.
- Bench Tested: Our alternators are pulled from running vehicles and tested for consistent voltage output and smooth bearing operation before being approved for sale.
- Replacement Warranty: We stand behind our electrical parts. If your alternator arrives damaged or fails to charge correctly upon professional installation, we will issue a replacement or a full refund.
- Expert Fitment: Our parts specialists verify amperage, pulley types, and connector pins to ensure your alternator is a direct, drop-in replacement.
