Dress up and open up a ZL1, CTS-V, or ZR-1 with Holley Hi-Flow billet fuel rails. The bright-dip, black-anodized rails feature a laser-etched EFI logo and serve as a direct replacement for the factory blower rails or any other supercharger designed to use OEM rails.
Specifications:
- Engine: GM LSA/LS9
- Finish: Black, bright dip anodized with laser-etched EFI logo
- Material: Aluminum
- Port Type: Port EFI, -8 (3/4-16) ORB inlet/outlet
- Auxiliary Ports: Four -6 (9/16-18) ORB ports (plugs included for unused ports)
- Fuel Passage Diameter: 21/32" (0.656")
- Injector Feed Diameter: 1/4" (0.25")
- Bracket Compatibility: Factory-height injectors (33.60mm)
- Part Number: 534-285
To use the factory fuel line quick-connect, add adapter kit P/N 534-211 (sold separately). System fuel pressure must be relieved before disassembly; a 3/8" quick-connect release tool is required to disconnect the factory fuel line.
FAQ
What vehicles is the 534-285 fuel rail kit designed for?
GM LSA/LS9-equipped vehicles such as the CTS-V, Camaro ZL1, and Corvette ZR1.
What injector height do the included brackets fit?
Factory-height injectors (33.60mm).
Can I use my factory fuel line quick-connect?
Yes, with the separately sold P/N 534-211 adapter kit.
What special tool is needed for installation?
A 3/8" quick-connect release tool to disconnect the factory fuel line; relieve system fuel pressure before disassembly.

