The BMW N54 Index 12 OEM Fuel Injectors are genuine replacement parts designed specifically for BMW vehicles. These bolt-on fuel injectors have a 2-inch diameter and come with an O-ring included for easy installation. With a superseded part number of 13537585261 and California Prop 65 warning regarding potential health risks associated with motor vehicles, these black connector fuel injectors are a reliable choice for maintaining optimal fuel delivery in your BMW. Made by the trusted brand BMW, these fuel injectors are essential components for ensuring the performance and efficiency of your vehicle.