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SR Performance Plug-in MIL Eliminators (96-04 All)

Market Price $54.99 You Save 13% ($7.00)
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  • Item 56045
  • MPN# 56045

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Features, Video & Details

  • Eliminates Check Engine Light
  • Exceptional Electronics
  • Easy Plug-In Design
  • Sold as a Set of Two
  • Fits 1996-2004 Mustangs

Review & Installation Video

Review & Install Video

What's going on, guys? Adam here with and I'm bringing you my review of the plug-in MIL eliminators for all '96 to '04 Mustangs. These MIL eliminators are going to be for all SN95 owners, excluding the '94, '95s, who are running a stock length or a shortie off-road mid-pipe, and want to get rid of that annoying "check engine" light on the dash. This will be one of the more affordable options compared to other alternatives, such as tuning, but will still get the job done. Now, you might be asking yourself, "Well, why do I need these?" Well, when you run an off-road mid-pipe setup, you're eliminating your catalytic converters. When your cats are gone, your O2 sensors are reading that something's wrong, which is when your "check engine" light comes on. That engine light's normally reading a P0430 code, which basically means your catalyst system efficiency is below threshold. Now, even though there's no harm done while driving on a "check engine" light beside a rough idle here or there, the biggest issue you're probably going to run into is you're not going to be able to pass your local emissions test with that light on. These MIL eliminators snap right into your O2 sensor harness on the '96 to '04s with any engine size, the GT, V6, Mach 1, or Cobra. You'll also notice they're sold in a set of two. That's because even though you've got two pre-cat and two post-cat sensors, these are only going to work with the post-cat sensors, otherwise known as secondary O2s. Now, when we're talking about the materials that the MIL eliminators are made of, you'll notice that it's a rugged plastic connector with state-of-the-art electronics to make sure that when the "check engine" light goes off, it stays off. You'll also notice that they're a very durable material, so when they're under the car, they won't be exposed to getting damaged from any of the elements. As I mentioned before, the plug-in MIL eliminators will be the least expensive option to getting rid of that "check engine" light caused by either cat deletes or high-flow cats. Coming in at around just shy of the $50 mark, compared to the other tuners that can cost you a couple hundred, this isn't that bad. Plus, one of the added benefits is that you can actually do it right at home in your driveway pretty quickly as compared to waiting for tuners to be ready. Let's jump right into the installation. Again, like I said, it's a pretty simple installation that anybody can do at home with just a few simple hand tools. You need a jack, a jack stand, and maybe even a utility knife. Start to finish to get these plugged in, you're looking at just about an hour, and I definitely give them a one out of three wrenches on our difficulty scale, simply because it is so simple to do in your driveway. The process will start with simply disconnecting the negative cable on the battery, just to be safe. We want to start by jacking up the vehicle on either end and using the jack stand to support the weight. Once you can get comfortably under the vehicle by the mid-pipe, you want to locate the O2 sensor and the vehicle's wiring harness. With the MIL eliminator in hand, you want to plug the corresponding end into the O2 sensor and the other end into the vehicle's wiring harness. Once it's fully plugged in, you can get out from under the vehicle, lower the car back down, and you're good to go. One thing I definitely want to point out is, some GT, Mach 1, and Cobra owners might need to make modifications to the clips on the MIL eliminators just to make them fit. A utility knife or something of the sort should be able to scrape off the alignment tabs just to make them snap in. Just to wrap things up, guys, if you're looking to get an off-road H-pipe or X-pipe and you don't want to spend the money on a tuner just yet, these plug-in MIL eliminators will be a perfect match to get rid of that dreaded "check engine" light, and you can get yours right here at

Eliminates Check Engine Light. If you're running an off-road H-Pipe or X-Pipe, SR Performance Plug-in MIL Eliminators will shut off the annoying Check Engine Light (CEL) on your dash. These MIL, short for Malfunction Indicator Light, Eliminators shut off CELs by blocking the codes generated by the rear O2 sensors. The codes are triggered when running an off-road Mid-Pipe or some Mid-Pipes equipped with ultra high-flow cats.

Exceptional Build. These SR Performance Plug-in MIL Eliminators are assembled from state of the art electronic components and include rugged, plastic plug-in connectors that easily insert into the stock wiring harness.

Easy Installation. Installation is straight forward and simple. Plug the MIL eliminator into the corresponding connectors. One end will plug into the oxygen sensor and the other end will plug into the Mustang's wire loom.

Application. This pair of SR Performance Plug-in MIL Eliminators are designed to be used on all 1996-2004 Mustangs, including V6, GT, Bullitt, Mach 1 and SVT Cobra models.

Technical Note. Minor modifications to the "clip" may be needed for installation on some GT, Mach 1 and Cobra Mustangs.

Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (2) Mil Harnesses
Installation Info
Tech Specs
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • V6 - 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Cobra - 96, 97, 98, 99, 01, 03, 04
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Minor clip modification may be required on some models

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Most Helpful Reviews

MIL Eliminators

I purchased these to go along with the install of a MAC Pro-Chamber on my 96 GT. I have nothing but good things to say about them. They work exactly as they should, and simply plugged into place. I have ...

Read More
Helpful (1)

MIL Eliminators

I recently put a off road Bassani x-pipe on my 97 cobra convertible which tripped the check engine light. I got my eliminators quickly and they went in easy. American Muscle got them here fast and acc ...

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Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 100+ Reviews

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23 Questions / 9 Answers

Ask a Question

would these fit a 2007 mustang gt? i recently purchased an o/r pypes x pipe from AM. after check engine light popped up. i plugged in my diablo sport 8900 tuner. took off light. bout 4 days later check engine light pops up again. did i tune the stang i really need these MIL eliminators for my 07 gt.


Helpful (12)
  • these are not designed for the 05+, you should however be able to turn off the rear o2 sensors with the diabosport 8900 tuner. if you did turn off the rear o2 sensors already. it could be another issue. if you know the codes you are getting you could look them up, but if you are getting p0420 & p0430 then the rear o2 sensors arent turned off. hope this helps.


Show 1 more answer

How do these work? I'm only running off 2 oxygen sensors so I'm confused


Helpful (5)
  • You plug them in to each side of the sensor that comes after where the catalytic converter would be. It interrupts the code for the MIL(malfunction indicator light), so it does not come on in your dash.


Show 4 more answers

Will this work for my 2006 mustang gt?


Helpful (0)
  • The SR Performance Plug-in MIL Eliminators would only work for 1996-2004 Mustangs, and would not work for your 2006

    Rob D

I have a custom exhaust and don't have either downflow O2 sensors. Can I just plug the one side in and tuck the other end away with out being plugged into an actual sensor.


Helpful (0)

Do the 02 sensors have to be put inside my H pipe with the MIL connected in order to work, or can I just connect the MIL's and tuck away the 02 sensors without being connected?


Helpful (0)



Helpful (0)
  • Hello! We have only tested these on 96-04 Mustangs. We cannot guarantee the SR Performance Plug-in MIL Eliminators will work on your 09 Ranger.


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Customer Reviews (100+) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Less than 1 Hour

Installation Cost:$100-$250

  • Performance Gain 3.812183 3.8
  • Fit 4.268868 4.3

  • 5/5

    July 25, 2016

    As expected

    Thought I avoided that nagging S.E.S. Light but after about 100mi post H-Pipe install it set the codes. Cleared coded installed and no problem since. A must have for H or X pipe installation.


    Year: 2000 Submodel: GT

    Helpful (1)

  • 1/5

    Installation Time: Less than 1 Hour

    June 08, 2016

    Wouldn't recommend for 99-04 owners.

    These worked for about half a day for me before my check engine came on. Very simple installation except for you need to modify the passenger side plug because, the tabs don't align correctly. At least on my 01 Bullitt they didn't.


    Year: 2001 Submodel: Bullitt

    Helpful (1)

  • 1/5

    Installation Time: Less than 1 Hour

    May 18, 2013

    Do not Work

    I called AM after I installed the mac pro chamber H pipe and I started getting a check engne light, Installed the Plug-in Mil Eliminators and still getting the check engine light, Called AM and was told they do not work on all rear O2 sensor codes so I guess I will hang them on the wall


    Year: 1996 Submodel: Cobra

    Helpful (1)

    • Response from AmericanMuscle

      I see that you have a handheld tuner. That should be able to pull your trouble codes and help determine exactly what is the cause of the CEL. While the MILs can turn off the CEL, if there is another underlying problem, that would need to also be addressed. If you have any questions, please don't hesitate to give our customer service a call - we'd be happy to help!

      Lisa , Customer Care

  • 5/5

    August 21, 2008

    MIL Eliminators

    I purchased these to go along with the install of a MAC Pro-Chamber on my 96 GT. I have nothing but good things to say about them. They work exactly as they should, and simply plugged into place. I have had no problems with a check engine light since installing.

    Pete Sullivan

    Year: 1996 Submodel: GT

    Helpful (1)

  • 5/5

    August 21, 2008

    MIL Eliminators

    I recently put a off road Bassani x-pipe on my 97 cobra convertible which tripped the check engine light. I got my eliminators quickly and they went in easy. American Muscle got them here fast and accurately.

    Josh Conrad

    Year: 1997

    Helpful (1)

  • 5/5

    August 21, 2008

    MIL ELiminators

    Just got an x-pipe and needed these to get the check engine light to come off. They worked great and were delivered to me fast. American Muscle always gets the orders in right away and gets me an e-mail super quick! I go here for everything for my Stang!

    Chris Wahl

    Helpful (1)

  • 5/5

    May 05, 2010

    Quick and Easy

    These MIL Eliminators arrived quickly and well packaged. They clipped right inline with the o2 sensors and immediatly shut off that annoying check engine light. Thanks American Muscle! Now how about some discount coupons :)

    John V.

    Helpful (56)

  • 5/5

    February 13, 2010

    Plug and Go

    AM is the Best to start out with! I had Codes p0420/p0430 coming up (Catalyst System Efficiency below Limit).After plugging in MILs, I had code p0136 (O2 Sensor circuit fault). I called AM said it maybe be a bad MIL. They got me new ones right away. Next day no codes and passed emissions.


    Helpful (34)

  • 5/5

    April 14, 2010

    Awesome, works great!

    They are a quality product and connected to my set-up with ease, a lot better then the set of MILs I previously had that got damaged. What makes these better is they are flexible and can conform to however you need to secure them to the underside of the car. Great product and if you are looking for them, don't buy them used.. get them here and you won't be disappointing. If your check engine light is on when you install these, disconnect the battery which will reset the code.


    Helpful (13)

  • 5/5

    Installation Time: Less than 1 Hour

    October 14, 2011

    Worked great on a Contour

    We have a 1997 Contour with a V6 engine, and were getting a "check engine" light while running very clean. In fact, the light was the only reason we were failing a California smog check. Since the registration had to be renewed a month before we would have access to any significant amount of money for catalytic converters and such, this was a problem. Enter the MIL eliminator. My husband probably spent longer getting under the car and then back out than he did on the actual install, which was very much plug-and-play. The parts fit into the car perfectly and installation was so easy I probably could have done it (and I'm very much not a car-repair girl). Once the test cycle completed with no "check engine" light, we passed smog check and renewed registration with no further hiccups. We do plan to finish repairs, but managed to buy ourselves time to come up with the money, since the tailpipe emissions were drastically below limits.


    Year: 1997 Submodel: Other Sacramento, CA

    Helpful (2)

  • 5/5

    March 02, 2010


    Works great, exactly as expected. If you have an off-road x-pipe these are a must. You dont want to ride around with the check engine light on, if something else were to start going wrong you would never know it till it was to late.

    Shane Hale

    Helpful (18)

  • 5/5

    July 20, 2010

    Performance Headers

    Had persistent P0420 and P0430 codes due to upgraded exhaust (full length headers, high flow cats and Flowmaster catback exhaust). Added these into the O2 sensor line for rear sensors and problem went away. Passed TN emissions with no issues.

    2004 Mustang GT

    Year: 2004 Submodel: GT

    Helpful (10)

  • 5/5

    January 03, 2011

    Great Product, Super Easy

    I needed these for my 2005 Mustang GT after installing the Pypes O/R X Pipe...I couldnt find any MILs for an 05 GT... Gave these a shot and they worked Perfectly... Code went away and has not come back on since... Great Product!!!

    Paul McGowan

    Helpful (5)

  • 2/5

    Installation Time: Less than 1 Hour

    June 23, 2012

    MIL Eliminator challenges

    Used the MIL Eliminators after the install of my JBA catless H-pipe. The connectors went together fine. My engine light came on after driving several hours wth a 'Stuck Lean' code the driver's side rear sensor. This was a sensor with a MIL Eliminator installed. I cleared the code and drove several more hours and the code returned. I notified AM and was immediately sent two replacements. I am very impressed with AM's customer service! I installed a new MIL Eliminator and received another 'Stuck Lean' code. I replaced with the second MIL Eliminator AM sent as a replacement and this appeared to work. At this point I went with an SCT tuner and look for the O2 sensor errors to be gone. I read on various message boards there are occasional issues with faulty MIL Eliminators but was surprised to have two not do the job. For that reason I can not recommend the MIL Eliminators but can easily recommend AM due to their efforts to correct the situation.


    Year: 2004 Submodel: GT

    Helpful (6)

    • Response from AmericanMuscle

      This is something we very rarely hear about and I'm very sorry you received 2 plugs that didn't work. I'm glad the replacement set at least gave you a completed set that worked. Had it not for some reason, we'd have shipped you another with no problem. Your decision to go the tuner route in the end will not prove to be a disappointing choice! You will get the best performance from your mid-pipe as well as any other mods you decide to make in the future! Enjoy it!

      Lisa , Customer Care

  • 5/5

    Installation Time: Less than 1 Hour

    November 05, 2011

    Easy plug-in solution to your check engine light!

    If you are installing or already have an off-road (no catalytic converters) mid pipe installed on your car, then this is the best way to remove that annoying check engine light. Installation couldn't be easier. Just plug in and you're done! Comes in a pack of two and is a male/female inline kit. A must have for any car without catalytic converters!


    Year: 2004 Submodel: GT Mobile, Alabama

    Helpful (6)

  • 5/5

    November 16, 2010

    MIL Eliminators

    This product worked amazing. I installed an off road h pipe on my 2001 v6 and after 3 weeks I have absolutely no problems. Great product!


    Year: 2001 Submodel: V6

    Helpful (7)

  • 4/5

    Installation Time: Less than 1 Hour

    March 09, 2012

    not to bad

    the only problem i had yet it was not a big deal was the two alignment tabs on the side of the connectors they would not plug in. just take a pair of snips and cut them off and they fit fine. if your MIL does not go off unplug your negative battery cable or take a scan tool and clear your codes that should keep it off if your codes are due to your catalytic converters.


    Year: 2000 Submodel: GT north carolina

    Helpful (3)

  • 4/5

    Installation Time: Less than 1 Hour

    October 24, 2011


    I ordered this item to go along with my Pypes O/R X pipe. Very easy install, clips right in. Fit was ok, but I had to use zip ties to hold them up from hanging below the body line. After install I still had the check engine light illuminate at times even after resetting. Over all good product, could have been other issue.


    Year: 2012 Submodel: GT Lovington NM USA

    Helpful (3)

  • 5/5

    May 24, 2011

    MIL eliminators

    I bought these for my 2006 GT and they work great. I had the MIL light come on once but I cleared it and no issues. They work great even on the years they aren't meant for. The install took maybe 5 minutes. Just plug in and that's it.


    Year: 2006 Submodel: GT

    Helpful (2)

  • 5/5

    April 19, 2010

    Works great on my 4.6L Cougar!

    Purchased these eliminators for my '96 Mercury Cougar XR7 with the 4.6L V8. The cats are good but my sensors were sending inefficiency codes and tripping the check engine light, which was preventing me from renewing my plates (Illinois and their dumb emissions laws) Ordered these eliminators, installed them, and I'm good to go! Plugs were a perfect match. Highly recommended!


    Year: 1996

    Helpful (5)

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