Holley EFI 534-284 Hi-Flow Billet Fuel Rails for Gen III Hemi Engines

The Holley EFI 534-284 Hi-Flow Billet Fuel Rails are precision-engineered to deliver maximum fuel flow for Gen III Hemi engines. These premium fuel rails are CNC-machined from billet aluminum extrusions and feature a laser-etched Holley EFI logo for a professional, high-performance appearance under the hood.

Key Features:

• Direct bolt-on fit for naturally aspirated Gen III Hemi engines including 5.7L, 6.1L, and 6.4L applications
• Large -8 ORB (O-Ring Boss) ports at front and rear for superior fuel flow and flexible plumbing options
• Integrated 1/8 NPT gauge ports machined directly into each rail for fuel pressure monitoring
• Factory injector clip retention feature ensures proper injector positioning for optimal spray pattern onto intake valves
• Complete installation kit includes mounting brackets and all necessary hardware
• High-quality billet construction provides strength and durability for street or race applications

These fuel rails are ideal for enthusiasts upgrading their fuel system to support increased horsepower demands while maintaining the reliability and precise fuel delivery required for modern EFI systems. The -8 ORB fittings accommodate high-flow fuel line setups, making these rails suitable for both mild street builds and more aggressive performance applications.