The product is a set of 6 BMW 13538677681 petrol fuel injectors with Teflon seals designed for the N55 B58 S55 engine. These bolt-on injectors are brand new, made in Germany, and are suitable for petrol fuel type. These are aftermarket manufactured item superior than OEM. These injectors are performance parts that replace superseded part numbers 13537578322 and 13537557550, offering a universal fitment for BMW petrol engine models. Each unit includes a seal and is guaranteed to enhance the fuel injection system of your vehicle.