Product Description
Holley EFI 534-284 Hi-Flow Billet Fuel Rails 2003-2021 Gen III HEMI 5.7L 6.1L 6.4L
Holley EFI Hi-Flow Billet Fuel Rails are a direct fit upgrade for 2003-2021 naturally aspirated Gen III HEMI 5.7L, 6.1L, and 6.4L engines. Designed for increased fuel flow in high horsepower applications, these billet aluminum rails feature a large 5/8" diameter internal fuel passage for increased flow capacity compared to factory fuel rails.
The black anodized billet aluminum rails feature -8 ORB ports at the front and rear, along with a 1/8" NPT port machined directly into each rail for the optional installation of a fuel pressure gauge. Factory injector clip reliefs are retained, allowing the factory fuel injectors and retaining clips to be reused while maintaining proper injector positioning.
Features:
- Direct fit for 2003-2021 naturally aspirated Gen III HEMI engines
- Fits 5.7L, 6.1L, and 6.4L applications
- 5/8" diameter internal fuel passage for increased fuel flow
- Machined billet aluminum construction
- Black anodized finish
- Laser etched Holley EFI logo
- -8 ORB ports at the front and rear of each rail
- 1/8" NPT fuel pressure gauge ports
- Retains factory injector clip mounting provisions
- Allows reuse of factory fuel injectors and retaining clips
- Mounting brackets and hardware included
Recommended Fitting:
For applications retaining a 3/8” OEM-style fuel hose connection, use Earl’s 935086ERL 90 Degree Quick Connect Adapter. The fitting features a -8 AN ORB male connection for the fuel rail and a 3/8” OEM-style quick connect for the fuel hose.
