Nissan Old GTR Mitsubishi Fuel Injector 16600-AA550 / FBJE100 Classic Fit

This replacement part has material and process essentially the same as the original, uses standard pressure specifications and voltage design, durable in actual use but not OEM-certified, with slightly lower long-term reliability than original. OEM numbers 16600-AA550 and FBJE100, fits older Nissan GTR models. Functionally, it precisely controls fuel injection quantity to maintain stable air-fuel mix. Replacement difficulty is moderate; requires removal of intake manifold and fuel rail, recommended for experienced technicians.