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Fuel Injector Clinic High-Z Impedance Fuel Injectors - 1000cc (99-04 Cobra; 05-20 GT; 15-20 GT350, GT500)

Item 397629
Market Price $839.99 You Save 17% ($139.99)
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$700.00 (set of 8)

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      Review & Installation Video

      Product Information

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


      • Data Match Technology
      • OEM ECU Saturated Injector Signal
      • 1000cc Saturated / High Impedance
      • Excellent Short Pulse Width Control
      • Flow Tested and Rated at 43.5 pSI (3Bar) @ 90ºF
      • E85 Compatible
      • O-Rings Included
      • Lifetime Warranty
      • Sold as a Set of 8
      • Fits 1999-2004 Cobra, 2005-2020 GT and 2015-2020 GT350, GT500 Mustangs


      Rev It Up. Unleash the power of your Ford Mustang with Fuel Injector Clinic’s 1000cc Fuel Injector Set. Using the latest technology, this set of 8 fuel injectors will give your Mustang short pulse width repeatability, great linearity, and great drivability. This set of injectors is easy to tune for the best performance in your Mustang. Fuel Injector Clinic includes all the O-rings you need for installation.

      Precisely Matched. Fuel Injector Clinic uses their proprietary Data Match Technology to ensure that each fuel injector in this set is precisely matched. All fuel injectors are subjected to flow testing at 43.5psi at 90-degree fuel temp using CF-16B calibration. Each injector has been given an individual serial number. A detailed flow sheet is provided in the kit with the test results for all the included fuel injectors. Each set of high impedance injectors’ saturated injected signal is matched to your Mustang’s OEM ECU. Fuel Injector Clinic’s covers this set of injectors with a lifetime warranty for failures related to manufacturing defects.

      Application. This set of 8 Fuel Injector Clinic 1000cc Fuel Injectors is designed for use with 1999-2004 Cobra, 2005-2020 GT and 2015-2020 GT350, GT500 Mustangs.

      Fitment: 1999 2000 2001 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Details

      MPN# IS403-1000H

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (5)

      Write a Review

      Ratings Summary

      4.2 out of 5 overall rating from 5 customers

      Installation Time: Less than 1 Hour

      • June 14, 2019

        1 2016 GT - JustinSquires Installation Time: Less than 1 Hour

        Doesn’t come as a complete kit

        They sell them as a complete kit for a 2015 mustang gt but after you install them they need spacers and longer bolts to make the height difference. And I have a stock intake manifold.

        Helpful (2)
      • September 08, 2018

        5 2013 GT - Blake Installation Time: Less than 1 Hour

        Great product

        Bought these to go with my Paxton kit. Worked really well and tuner had no problem tuning with them

        Helpful (7)
      • April 25, 2018

        5 2016 GT - JohnS550 Installation Time: Less than 1 Hour


        These were exactly as described, relatively simple to install and you could notice the difference right away.

        Helpful (7)
      • August 14, 2017

        5 2006 GT - JamesG Installation Time: Less than 1 Hour

        Beat Injectors ever

        Worked out good. Got here super quick. Look amazing, work amazing

        Helpful (10)
      • June 01, 2017

        5 2013 GT - Sebastian Installation Time: Less than 1 Hour

        Bang for the buck

        These injectors are amazing for the price, quick and easy install and a verey well designed part.

        Helpful (11)

      Questions & Answers (12 answers)

      5 Top Rated Questions

      I have a procharged 2014 mustang gt. And was wondering if these will support enough flow for e85 on a stock block. Just trying to push between 6 to 700rwhp if possible. Or will I need higher flow rate for that? Thanks in advance

      • These injectors do have the ability to support that amount of horsepower, however, they are not E85 compatible, the injectors we would recommend going with are the DeatschWerks Mustang 78Lb injectors. These would provide enough fuel for that horsepower amount and are E85 compatible, the rest of the fuel system also has to be modified to run E85 however.

      Helpful (5)

      These work with E85 right?

      • Yes, these work with E85 fuel.

      Helpful (1)

      Would this fuel injector work on my 2005 kenne bell supercharged pushing 500whp?

      • This will work together yes.

      Helpful (1)

      Will this work with 2014 5.0 with phase 3 Roush Supercharger bolt ons ?

      • These Fuel Injector Clinic Fuel Injector Set will work as long as the vehicle is tuned after the installation of the injectors.

      Helpful (1)

      I been looking at different injectors and larger throddle body, I have a 2015 mustang gt 5.0 and I going to put catted headers on. Can you please advise me what would be a good combination? Thanks very much for your time. Hoping to hear from you soon.

      • The Fuel Injector Clinic Fuel Injector Set will be excessively large for the modifications you have listed. A 2015 With A CAI, Throttle body, headers and a tune will see no benefit from larger injectors, as you will not have moved past what the stock injectors can support. We recommend the BBK, or C&L 85mm Throttlebody for applications like yours.

      Helpful (1)
      Post Your Question
      7 More Questions
      I have a 2014 GT 5.0 with a stage 2 Roush ,Kooks headers, 373 rear . I drive the car on the street and do some racing on the track every now and then. I want to change the supercharger pulley to a 79 MM . Would these injectors work with my set up. thanks 1 answer
      I have a 2017 Roush and I'm looking to get the Comp cams, long tubes, and the phase 2 upgrade for the supercharger. Will that require upgrading the fuel injectors or will the stock injectors still be within tolerance? 1 answer
      Will these work on an 2001 GT with a cold air intake, 78mm throttle body, 93oct tune, coil pack, and soon to be 125 shot of nos? 1 answer
      Are the spacers included that makes these fit a Roush supercharger on a 2015-2017 coyote . 1 answer
      I have a 2015 mustang gt with a roush phase 1 on it with full exhaust. I was wanting to tune for e85 and 93 along with a 69mm pulley. Will these injectors support e85? I see other people ask if it will and there are mixed answers? 1 answer
      I’m about to get a gt350 intake manifold, TB CAI, will these injectors work if I decided to go E85? 1 answer
      I have a 15 GT with the Ford Performance Pack 2 installed, which came with a tune. I see the Fuel Injector set comes in 3 different cc's (775cc, 1000cc, 1650cc). I would like to know which cc injector, if any, would be the best match for my current set up. And if installed, would I have to get another tune done by Ford Performance ( to keep my warrranty )? Any idea of what Horse Power gains I would be looking at? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (8) 1000cc Fuel Injectors

      Tech Specs

      Will It Fit My Mustang

      • Boss 302 - 12, 13
      • Bullitt - 08, 09, 19, 20
      • Cobra - 99, 00, 01, 03, 04
      • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
      • GT350 - 15, 16, 17, 18, 19, 20
      • GT350R - 15, 16, 17, 18, 19, 20
      • GT500 - 20

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