Fit：For engine xpi hd kit，more applicable information is shown below. Durable Material: Automotive engine fuel injector made of quality fuel corrosion-resistant materials, it has passed strict testing and verification, can adapt to complex working conditions, and has a long service life. Precise Injection Control: Engine Fuel Injectors Adopts a high-precision valve core structure, which can accurately adjust the fuel injection volume, ensure full combustion of the engine, and improve power performance. Professional Design: Engine fuel injectors kits easy installation and perfect fitment to restore your fuel system’s proper function. Quality Service: Fuel injectors has been strictly inspected through multiple procedures to ensure working performance and service life, a tight packaging protects the item from dust and water., Manufacturer: HFEWCVK Store