Show you care for your Ford with new Focus ZX3 Voltage Stabilizer. Install a Voltage Stabilizer right away! Add horsepower and fuel mileage to your vehicle with a Voltage Stabilizer. Be wild or mild with Focus ZX3 Voltage Stabilizer. These Voltage Stabilizers optimize the electrical equipment in your vehicle. Make your compact fun with ZX3. Voltage Stabilizers are great for people with aftermarket stereo equipment.