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Nitrous Express Fuel Line Adapter (99-04 GT)

Item 25015
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Market Price $67.99 You Save 9% ($6.21)
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • High Flow Design
      • Ford EFI to 1/8" NPT Adapter
      • Eliminate Fuel Line Cutting
      • Makes Nitrous Install Easier
      • Black Anodized Billet Aluminum
      • Fits 99-04 Mustang GT


      Fuel Line Adapter. If you need to tap into your fuel line when installing a nitrous kit or adding a fuel pressure gauge, a Nitrous Express fuel line adapter is the perfect solution. This adapter eliminates cutting and drilling - just bolt this adapter in between your fuel pressure sensor and the fuel rail for a clean, leak-free connection. It adapts your Ford EFI connector to a 1/8" NPT connection seamlessly with no hassle or mess.

      High Quality Construction. This high quality part is made of lightweight billet aluminum so it won't weigh your high performance Pony down. Plus it features a black anondized finish for great underhood looks and superior durability.

      Application. This NX Fuel Line Adapter is designed for 99-04 Mustang GTs.

      Fitment: 1999 2000 2001 2002 2003 2004 Details

      MPN# 16183

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (6)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 6 customers

      Installation Time: Less than 1 Hour

      • January 19, 2020

        5 2003 GT - PaulC Installation Time: Less than 1 Hour

        Nice part well made.

        Great part just didn't fit my 03 GT only because aftermarket supercharger bypass valve was in the way.

        Helpful (0)
      • December 22, 2018

        5 2003 GT - JeremiaH Installation Time: Less than 1 Hour

        Simple install

        Install is stupid easy, and takes about 10 minutes to complete. It's a lot better than splicing a T-fitting into the main fuel line, and has been put through the test. I ran a 100 shot on my mustang, and it NEVER leaned out. I would highly recommend this adapter for any 2v nitrous application. I'm not sure about Schrader valves though...

        Helpful (2)
      • September 23, 2014

        5 2000 GT - coaster2000 Installation Time: Less than 1 Hour

        Easy install

        I used this to install a fuel pressure gauge. I did not want to loose my pressure release valve this made it east to tap the pressure regulator on the left fuel rail. You just piggy back the Adapter under the pressure regulator. The sending unit for your guage must be on the inside or it will not clear coil or injector. It works perfectly with no leaks.

        Helpful (12)
      • March 29, 2013

        5 2002 Other - AlexAM Installation Time: Afternoon

        great product

        don't have any complaints about the item bought it to have a fuel psi gauge. simple install.

        Helpful (11)
      • January 18, 2013

        5 2002 GT - OhTwoGT Installation Time: Less than 1 Hour

        Great product

        Definitely does what it is supposed to do. havent had one leak so far and it looks nice and stealthy under the hood, I would definitely buy again

        Helpful (9)
      • May 19, 2011

        4 2003 Cobra - ron

        NX line adapter

        product is pretty good,good quality for the most part. the only reason why im giving it a four star is i had to do a mock up and prelube the o-rings and when i took it aparts both o-ring ripped very cheap o-ring but .10 cents a pop not that big of deal i guess

        Helpful (11)

      Questions & Answers (4 answers)

      4 Top Rated Questions

      I have a 2004 Mustang GT without a Schrader Valve to connect a fuel pressure gauge. Normally there would be a valve on top of the fuel rail.... but Ford removed to and made these "returnless". So will this adapter be placed underneath the sensor?

      • The Nitrous Express Fuel Line Adapter will install between the fuel rail and fuel rail pressure sensor, giving you a port to access fuel at the rail.

      Helpful (0)

      Will this work with BBK high-flow fuel rails

      • This fuel line adapter should work fine with the BBK fuel rails.

      Helpful (0)

      will this work with zex nitrous system

      • If it's a dry zex nitrous system you not need it at all . If it's a wet zex nitrous system then yes

      Helpful (0)

      will this part fit my 2004 mach fuel line

      • This adapter is intended to be used with the 99-04 4.6L 2V fuel rails. It shouldn't be used on your 4V Mach 1 unfortunately.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Fuel Line Adapter
      • (2) Bolts

      Tech Specs

      Will It Fit My Mustang

      • GT - 99, 00, 01, 02, 03, 04

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