J71043-91 is a precision aerospace component compliant with AS9100D quality standards and FAA/EASA aviation regulations, dedicated to aircraft engine fuel injection systems.It acts as a high-precision fuel injector filter, a core protective component for MRO assembly and replacement. It effectively filters contaminants, impurities and particulate matter from high-pressure fuel, prevents clogging of injector nozzles and control valves, maintains stable fuel atomization and precise delivery, avoids combustion inefficiency and engine misfire caused by blocked fuel passages under all flight conditions.Made of aviation-grade corrosion-resistant stainless steel with high-density filtration media, it resists fuel erosion and high pressure, working stably at -55℃ to 290℃. Weighing 0.06kg, it features compact structure, high filtration efficiency, easy cleaning and quick-connect design for convenient maintenance. It is a critical component to guarantee fuel system integrity and overall engine operational safety, efficiency and durability.