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Fuel Rail Adapter 5/16 OE to 3 x 1/8 NPT Ports - Black Anodized Aluminum

Brand NOS Reference 17003NOS

Eliminates cutting, drilling and 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 the fuel hose.

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Available from the manufacturer 23 in stock at factory
Expected delivery to you on Nov 13, 2026
This lead time is an estimate and may change due to circumstances beyond our control

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Eliminates cutting, drilling and 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 the fuel hose. The three 1/8 inch NPT ports can be oriented in any direction for the best fit in your application. The -4AN adapter is used to feed fuel to your nitrous plate.

Main Body - Fits 5/16" Tube & ( PI) 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

Key features

  • Billet Aluminum 6061-T6
  • Black Anodized Finish
  • ( PI) 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 ( PI) 1/8" NPT Ports
  • This Adapter Can Also Be Used to Add Fuel Pressure Gauge or Schrader Valve on Late Model Vehicles

Technical specifications

  • Brand: NOS (Nitrous Oxide System PI)
  • Manufacturer part number: 17003NOS
  • Adapter type: Quick Connect
  • Colour: Black
  • Finish: Anodized Black
  • Inlet: 5/16 in
  • Material: 6061 Aluminum
  • Outlet: 1/8 NPT Female
  • Tube diameter: 5/16 in (7.9 m PI)

Important: this product runs on nitrous oxide (N2 PI), a gas we do not supply and which is currently difficult to obtain. It is your responsibility to find a local supplier of gas for professionals. NOS bottles do not comply with CE standards (they do not carry the PI mark): only CE-approved bottles may be used. European manufacturers offer bottles approved to contain this gas; please check the applicable standards and verify the manufacturer's origin and compliance before purchasing. NOS fittings are not metric (AN / NPT threads depending on the part numbe PI): plan for the adapters needed for your installation. Please comply with the regulations in force in your country.

Product family: Engine
Engine Fuel System
Materials: Aluminum
Color: Black
Produit mis à jour le: 2026-10-23 15:38:12