Circuit Sports S13 SR20-DET top feed fuel rail kit has a 11mm fuel rail opening for all Denso type top feed injectors. Using Injector Dynamics top feed injectors for the SR20-DET is ideal. Kit comes with all hardware and accessories for direct bolt on install. The kit will also comes with AN6 fuel inlet/outlet fittings/o-rings.

- 3/8" NPT center port and plug.