Genuine OEM Audi Pyrotechnic Battery Fuse, part number 4F0915519. This critical safety component is engineered to rapidly disconnect the battery from the vehicle's electrical system. It activates in the event of a severe electrical fault or collision, preventing further damage or fire. Weighing approximately 0.061 kg, this compact unit is designed for direct integration into the battery circuit. Opting for a genuine OEM pyrotechnic fuse ensures precise activation thresholds and reliable, instantaneous operation, crucial for vehicle safety systems.