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NOS Late Model Billet Fuel Line Adapter - Fits 5/16" Fuel Rail

Black Anodized Aluminum - (3) 1/8" NPT Ports w/ Adapters & Plug, -4 AN Fuel Port

PART# 17003NOS

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Eliminates Cutting, Drilling & Modifications When Installing Nitrous on a Late model Fuel Injected Vehicle. Simply disconnect the OE Fuel Hose and Install this Adapter Between the OE Fuel Rail and Fuel Hose. The (3) 1/8" NPT Ports Can Be Configured in Any Direction For Best Fit In Your Application. The -4 AN Adapter is Used to Feed Fuel to Your Nitrous Plate. Includes: Main Body - Fits 5/16" Tube & (3) NPT Ports 1/8" NPT Pipe Plug w/ Sealant - Steel w/ Nickel Plating 1/8" NPT Male to -4 AN Male Adapter - Steel w/ Nickel Plating OE Fuel Line Adapter 5/16" Tube x 1/8" NPT Male


  • Billet Aluminum 6061-T6
  • Black Anodized Finish
  • (3) 1/8" NPT Outlets
  • Includes 1/8" NPT Plug, -4 AN Male Adapter, and Fuel Line Adapter
  • Simple Way to Feed Fuel to Your Nitrous Plate
  • Ideal for Use on Late Model Vehicles w/ 5/16" Inlet to Fuel Rails
  • The Adapters & Plugs Can Be Installed in Any of the (3) 1/8" NPT Ports
  • This Adapter Can Also Be Used to Add Fuel Pressure Gauge or Schrader Valve on Late Model Vehicles


Adapter TypeQuick Connect
Emission Code4
FinishAnodized Black
Inlet5/16 inch
Inlet Qty1
Material6061 Aluminum
Outlet1/8NPT Female
Product TypeFuel Line Adapter
Tube Size5/16"
Part Number17003NOS

Service Parts



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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