Genuine OEM Volkswagen plug-in fuse, part number N91186301. This safety device is designed to melt and break an electrical circuit when the current exceeds a safe level, protecting sensitive electronic components from damage. It is located within the main fuse box assembly. Genuine OEM fuses are calibrated to exact amperage ratings and thermal response times to ensure they provide the intended protection without nuisance tripping or failure to activate during an electrical fault.