Radium Engineering Fuel Rails – GM LS1, LS2, LS3, LS6, L76, L99

This Radium Engineering dual fuel rail kit is designed for high-performance GM LS engines and supports the fuel demands of high-horsepower applications. CNC machined from 6063 aluminum with a black anodized finish, these rails feature a large 0.69" internal bore and multiple 8AN ORB ports for maximum fuel system flexibility.

Key Features:

• Large 0.69" internal bore for high fuel flow

• Compatible with all fuel types including E85, methanol, and gasoline

• Machined from extruded 6063 aluminum and black anodized for corrosion resistance

• Laser-etched for a clean, professional finish

• (4) end ports and (2) center ports, all tapped for 8AN ORB fittings (3/4-16 female)

• Modular billet mounting feet for compatibility across multiple LS platforms

• Accepts OEM and OEM-equivalent fuel injectors with 14mm top O-rings

• Injector clips not required; uses factory mounting method

• Designed to work with aftermarket intake manifolds

• Not compatible with factory engine cover

Engine Compatibility:

• LS1, LS2, LS3, LS6, L76, L99

Injector Compatibility:

• Designed for OEM-style injectors with 14mm O-rings

• Compatible with factory and equivalent aftermarket injectors

• For upgraded injectors, consult your injector supplier for fitment

Important Notes:

• Appropriate 8AN ORB fittings must be selected separately based on the installation layout

• Ensure ample clearance for fuel pressure regulators, gauges, and dampers

• Optional fuel pulse dampers may need to be mounted on the rail ends with aftermarket manifolds