Billet Performance Products Nissan S13 SR20DET fuel rail kit is a direct bolt-on fuel rail upgrade for 14mm top-feed injector conversions.It is built for SR20 owners moving beyond the factory side-feed style arrangement and wanting better injector options for tuned street cars, drift cars and track builds. This kind of rail is commonly used with larger injectors, braided hose, EFI pressure regulators and the rest of a serious fuel system package.Features MPN: BPP8006 Fitment: Nissan S13 SR20DET Injector style: 14mm top-feed injectors Injector compatibility: Supports common EV14K and EV14 style injector lengths with supplied adaptors Construction: CNC-machined 6061-T6 billet aluminium Rail bore: 16mm internal bore Finish: Type II bright dip anodised finish Typical Applications Nissan S13 SR20DET top-feed injector conversions Street, drift and track SR20 fuel system upgrades Aftermarket ECU and larger injector combinations E85-capable fuel system builds using braided hose and AN fittings Fitment Notes Suits Nissan S13 SR20DET intake manifold layout Designed for 14mm top-feed injectors Not the same rail as S14/S15 SR20DET applications Confirm injector length and fuel plumbing before final assembly