Overview Dress up and open up your ZL1, CTS-V, or ZR-1 with Holley Hi-Flow Fuel rails. The bright dip, black anodized rails come with laser etched EFI logo for long-lasting good looks and are a direct replacement for the rails on the factory blower or any other supercharger that was designed to use OEM rails. For perfect sealing, the 534-285 kit has been machined to accept -8 (3/4-16) ORB ports which use O-ring fittings. But, to utilize your factory fuel line quick-connect, just add P/N 534-211 adapter kit for a quick and easy install. | The included brackets are for factory-height injectors (33.60mm). Features Direct replacement for the OEM rails on the factory blower or any other supercharger that was designed to use OEM rails Bright dip, black anodized finish with laser etched EFI logo for long-lasting good looks Fuel rails are machined to accept -8 (3/4-16) ORB ports which use O-ring fittings Fuel rails are also machined in the center with four -6 (9/16-18) ORB ports to accept O-ring fittings (sold separately). Qty. 8 -6 ORB port plus also included to seal unused ports 6 (9/16-18) ORB ports can be used as fuel gauge/sensor locations by using a -6 ORB to 1/8 NPT adapter (sold separately). Can also be used for fuel pulse damper (sold separately) mounting locations 21/32” (0.656”) diameter fuel passage provides the flow capacity for high horsepower applications ¼” (0.25”) diameter fuel passage feeding each injector Brackets are included for factory height injectors (33.60mm) Compatible with factory fuel line quick-connect by using P/N 534-211 adapter kit (sold separately)
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