Discover the high-quality Diesel Common Rail Injector Spare Parts Nozzle Nut, size Φ18.9×36.6×M17*0.75, designed for precision and durability. Perfect for injectors like A2C59517051 BK2Q-9K546-AG, this nozzle nut is made from high-speed steel and certified by CE and ISO9001. Ideal for global markets, including South/North America, Europe, and Asia.