Engine Electrical
Alternator
The alternator charges your battery and powers the electrical system while the engine runs. We list 214 alternators from $24 to $342 for 1972-2022 vehicles, with ratings from 75 amps to 150 amps. Chevrolet and Ford lead the list, with many options for the F250, Tahoe, Equinox, F350 Super Duty, Impala and Silverado 1500.