Accent the German styling with 8 Series Voltage Stabilizer. Install a Voltage Stabilizer right away! Add horsepower and fuel mileage to your vehicle with a Voltage Stabilizer. Be proud of your BMW with new 8 Series Voltage Stabilizer. These Voltage Stabilizers optimize the electrical equipment in your vehicle. Driving never felt so good, after adding 8 Series Voltage Stabilizer. Voltage Stabilizers are great for people with aftermarket stereo equipment.