Holley EFI 534-285 Billet Fuel Rail Kit for LSA and LS9 Supercharged Engines

The Holley EFI 534-285 Billet Fuel Rail Kit is engineered as a direct replacement for OEM fuel rails on LSA and LS9 supercharged engines. These precision-machined billet aluminum rails deliver superior fuel distribution and flow capacity for high-performance applications.

Key Features:

• Large 21/32" (0.656") diameter main fuel passage provides exceptional flow capacity for high horsepower builds
• ¼" (0.25") diameter fuel passages feeding each injector ensure consistent fuel delivery
• Machined to accept -8 (3/4"-16) ORB ports with O-ring fittings for secure, leak-free connections
• Four additional -6 (9/16"-18) ORB ports machined in center of each rail for fuel pressure sensors, gauges, or pulse dampers
• Includes mounting brackets for factory height injectors (33.60mm)
• Eight -6 ORB port plugs included to seal unused ports
• Bright dip black anodized finish with laser-etched EFI logo for durability and professional appearance
• Compatible with factory fuel line quick-connect fittings using Holley adapter kit P/N 534-211 (sold separately)

This fuel rail kit is designed as a direct bolt-on replacement for the factory blower or any aftermarket supercharger designed to use OEM-style fuel rails. The multiple port options provide flexibility for custom fuel system configurations, including fuel pressure monitoring and pulse damper installation using appropriate adapters (sold separately).