Fuel Hose Fitting # 3577 For Pro-Flo XT, Pro-Flo 2, 3, And 4 Systems

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Edelbrock Part # 3577 Regulator Fitting is a -6 AN fuel inlet fitting is for use with fuel mounted regulators that come included with all Pro-Flo EFI systems. The fitting will screw directly onto the fuel rail mounted fuel regulator and provide you with a -6 AN male nipple to connect your return fuel line to. This is the easiest and cleanest way to connect a return fuel line to your Edelbrock pro-Flo EFI system's fuel regulator.


Availability Available
Application Universal
UPC 00085347035779
Recommended Use For Pro-Flo 2, Pro-Flo XT, Pro-Flo 3, And Pro-Flo 4 Systems
Quantity Sold Individually
Thread Type Coarse
End 2 Type Threaded, Straight
Thread Diameter 0.563 in
End 1 Type Threaded, Straight
End 2 Gender Male
End 1 Gender Male
Availability Note Available to Order
Warranty 12 Months
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Installation Notes
  • Proper installation is the responsibility of the installer. Improper installation will void your warranty and may result in poor performance and engine or vehicle damage.
Material Brass