The Mercedes Benz plastic knurled nut M6 is a genuine OE/OEM part designed specifically for Mercedes R107, W115, W116, and W123 models. With the manufacturer part number 1159900557, this nut provides a secure and durable fastening solution for exterior parts and accessories on these vehicles. Made by Mercedes Benz, this knurled nut ensures quality and compatibility with the specified car models, making it an essential part for maintaining the integrity and appearance of your vehicle.