A fuel rail kit for the 2JZ as fitted to the Supra. The 2JZ is routinely built well beyond standard output, and the factory rail was never intended to feed the injector sizes those builds require; on a big-power car the standard rail can become a genuine restriction and allow pressure to fluctuate between cylinders. This kit replaces it with a larger-volume rail carrying AN ports, so you can plumb proper feed and return lines and hold steady pressure across all six injectors under sustained boost. Verify injector length, O-ring diameter and whether your setup needs a top or side feed arrangement before ordering.