The Genuine BMW Power Brake Booster (part number 34336851097) is a component of the braking system in BMW vehicles. It is responsible for increasing the force applied to the brake pedal, making it easier for the driver to stop the vehicle. This power brake booster is a genuine BMW part, ensuring quality and compatibility with the vehicle. It is designed to meet the high standards of BMW and provide optimal performance. The brake booster is an essential part of the braking system, providing the necessary power to stop the vehicle safely and efficiently.