Voltage regulators and rectifiers keep your charging system delivering the correct, steady voltage to the battery and electrical system — the regulator holds output within a safe range, while the rectifier converts the alternator's AC output into usable DC power. A failing unit can cause a battery that won't hold a charge, dimming or flickering lights, or damage to sensitive electronics from voltage spikes. Browse replacement voltage regulators and rectifiers for cars, trucks, and SUVs to restore stable, reliable charging.
