Fuel Rail System LSX/LS1 w/Fittings & Hardware

The Fuel Rail System LSX/LS1 w/Fittings & Hardware from FAST Electronics is the foundation of a high-flowing fuel delivery system for LS-platform engine swaps and modifications. Designed for builders and enthusiasts upgrading to direct injection or carbureted LSX and LS1 powerplants, this complete fuel rail assembly eliminates guesswork when transitioning from factory fuel management to a standalone or aftermarket EFI setup. Whether you're building a street machine, track car, or restomod, a quality fuel rail ensures consistent fuel distribution across all injectors and maintains stable idle and wide-open-throttle response.

This system arrives as a complete kit with all fittings and hardware pre-assembled, eliminating hours of sourcing individual AN adapters, clamps, and banjo bolts from multiple suppliers. The fuel rail itself is precision-engineered to mount directly to LS-family cylinder heads, distributing fuel evenly to each fuel injector port with minimal dead volume—critical for responsive throttle control and clean combustion at all RPM ranges. The included fittings accommodate -6 or -8 AN fuel line connections, allowing seamless integration with popular fuel system configurations running standard 3/8-inch or 5/16-inch supply and return lines. Proper fuel rail design reduces fuel temperature rise during circulation and maintains injector spray pattern integrity under boost or high fuel pressure.

LS engine builders, engine swap specialists, and DIY enthusiasts benefit most from this bolt-on solution when upgrading carburetor setups to modern fuel injection or replacing OEM rails during platform migrations. The kit's compact 8.55 x 4 x 19.35-inch footprint fits tight engine bays common in vintage muscle cars, import platforms, and mid-engine conversions. FAST Electronics' reputation for precision fuel system components ensures fitment consistency across naturally aspirated and turbocharged LS1 and LSX applications, from street cars to competition vehicles. Installation requires basic hand tools and familiarity with fuel system plumbing; the included hardware accommodates both stock and aftermarket intake manifold configurations.