This FEBI BILSTEIN wheel speed sensor, part number 34778, is engineered to provide precise rotational speed information for your vehicle's anti-lock braking system (ABS) and electronic stability control (ESC). Proper functioning of the wheel speed sensor is critical for maintaining vehicle safety and handling, especially during braking and cornering. A faulty sensor can lead to illuminated warning lights on your dashboard and compromised system performance. FEBI BILSTEIN is known for its commitment to quality and reliability. This sensor is designed to meet or exceed original equipment specifications, ensuring a proper fit and function, and restoring your vehicle's safety systems to optimal working order.