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SR Performance O2 Sensor Extension Kit - Pair (86-10 All)

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  • Item 56013
  • MPN# 56013

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    Features, Video & Details

    • Extended O2 Sensor Harness
    • Great for Modified Exhaust Systems
    • Easy Installation
    • 18" Long
    • Sold as a Set of Two
    • Fits All 1986-2010 Mustangs

    Review & Installation Video

    Review & Install Video

    So you just installed a new set of long tube headers or an aftermarket midpipe, and now your factory O2 sensor harness is a little too short. If that sounds like you, this O2 sensor extension kit is your solution. This kit for your ’86-’09 Mustang includes two harnesses that extend both your primary and secondary O2 sensor wires by 18 inches. That should be enough to bridge the gap between your factory O2 sensors and your factory harness. The great thing about this kit is that it’s completely plug and play, so there’s no need to hack up your factory harness in order to extend your wires. It’s a very straightforward install that should take you no more than a few minutes. If you’re pumped to install that new off-road x-pipe, or that new set of headers, only to find that your O2 sensors no longer fit, this kit will solve that problem easily without breaking the bank.

    "Plug and play". When your modify your exhaust system, sometimes the stock O2 sensor harness just comes up too short to connect the O2 sensors, but this SR Performance harness extension kit will help bridge the gap.

    Great for modified exhaust systems. If your stock wiring harness is too short to connect your existing O2 sensors to a new set of headers or a mid pipe, don't just leave the old wires dangling - because your car just won't pass inspection. Instead use a set of 18" O2 Sensor Extensions to make the connection a snap.

    Application. This pair of SR Performance O2 Sensor Extensions is designed to fit on all 1986-2010 Mustang exhaust system configurations.

    Please Note. The Extensions are intended for use to extend to upstream O2 Sensors; however, they can be used upstream or downstream if needed.  O2 Sensors are not included.

    Technical Note. Removal of directional tabs on connector ends may be required for proper fitment on some applications.

    Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Details

    What's in the Box
    • (2) O2 Sensor Extensions
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Bullitt - 01, 08, 09
    • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
    • Cobra R - 93, 95, 00
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10
    • GT500 - 07, 08, 09, 10
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Mach 1 - 03, 04
    • Other - 86
    • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10

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    Questions & Answers (19)

    5 Top Rated Questions

    I have an 08 GT w/ Kooks LT headers, Kooks catted H-pipe, Ford Racing Exhaust, Ford Racing Hot Rod Cams, Steeda CAI, and Dyno tune. My check engine light has been triggered since I had the car dynoed. The code is for the cats. I believe it is a false reading because the catts are high flow. The bama tune I had prior to getting it dynoed turned off specific functions of the computer to prevent this problem. Will these extensions keep the light off?

    • The SR Performance O2 Sensor Extension Kit is simply an extension so the harness will reach when the O2 sensors are relocated, such as with Long Tube headers, but this will do nothing for check engine lights..

    Helpful (0)

    I’m thinking of buying the slp loudmouth exhaust for my 04 Mustang got but was wondering if I would need these?

    • The SR Performance O2 Sensor Extension Kit will only be required when installing long tube headers.

    Helpful (0)

    I’m planning on putting BBK long tubes and catted H-pipe on my 03, will I need these O2 extensions?

    • The SR Performance O2 Sensor Extension Kit will be needed when installing the BBK Long Tube Headers.

    Helpful (0)

    I am installing jba longtubes and jba catted h pipe on my 07 gt. Will i need one pair or two pairs of these extensions?

    • You will only need one pair of the o2 sensor extensions when doing long tube headers.

    Helpful (0)

    Will I need these extensions on a 04 Cobra with stock manifolds and a Mac Pro chamber?

    • Yes, the O2 Sensor extensions are necessary for an 04 Cobra running the Mac Pro Chamber.

    Helpful (0)
    Post Your Question
    10 More Questions
    i'm modding on a budget. i'm planning on getting pacesetter long tube headers and kooks catted h pipe. will installing this stop the engine light or would i have to find eliminators (not trying to run a tune) 1 answer
    Would I need these for my 2014 mustang v6 if I was going to order the chambers off road h pipe? I have touring axle backs and I want to increase the sound but not make it too loud. I heard I need these so the sensor doesn't come on? 1 answer
    will this fit on my 2006 4.0 mustang for the downstream o2 sensors? 1 answer
    Will these work and fit properly on MAC long Tube headers?? 1 answer
    I was adding an off-road H pipe and long tube headers on my 08 mustang. Does that require me to use a Mil eliminator and these O2 sensors? I cannot find 05-09 mil eliminators online so does that mean I will only need these extensions and the check engine light will stay off? 1 answer
    Will I need to buy these for my 2007 mustang gt I got pacesetter headers 2 answers
    I ordered the pacesetter long tune headers for the 05-09 models will I need 2 or 4 extensions? I have a 05 v6 and plan on getting the cats cut off ( don't know if that would make a difference) 1 answer
    I didnt see anything for 2010? Will these work for a 2010 v6 ? I have longtube headers 1 answer
    I have an Off Road X-Pipe, So I need the MIL Eliminators as well. In 2004, they made some changes to the exhaust for emissions and changed the sensor locations. So I need these extensions, but I also need the MIL Eliminator's, is there anyway I can use these AND the eliminators? Or do they make extended MIL Eliminators? 1 answer
    Do I need these extensions with stock manifolds, mac pro chamber and stingers? 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (100+) Write a Review

    Overall Rating 4.5

    out of 5 stars

    • 5/5

      August 13, 2018

      Quick installation

      Had it installed in 15 minutes. Only thing to watch for with 04 mustangs is the fact that the right side o2 connection is hidden up by the trans. You have to fish that out but once you get that it’s a breeze.


      Year: 2004 Submodel: GT

      Helpful (0)

    • 5/5

      August 04, 2018

      2003 v6

      well i live in north carolina where we have stupid emission laws so i have to get these to pass my inspection but other than that if your running into the same problem they are an amazing buy i have a 2003 3.8 liter v6 with some visual mods and an aftermarket exhaust and planning on putting on longtube headers but these in my opinion are amazing purchase if you plan on putting headers on and your county or state has emission laws and inspection these are a good way to make sure you pass im about to get my headers done so hopefully will pass inspection


      Year: 2003 Submodel: V6

      Helpful (0)

    • 5/5

      July 16, 2018


      they are good okay...............................................


      Year: 2004 Submodel: GT

      Helpful (0)

    • 5/5

      July 12, 2018

      good product

      product worked just as it was supposed to and was good quality


      Year: 2003 Submodel: V6

      Helpful (1)

    • 5/5

      June 30, 2018

      Worked like a champ

      Had to relocate 02 sensors because of new BBK x-pipe. This is what you'll need if you have a 04 mustang gt. Easy hookup


      Year: 2004 Submodel: GT

      Helpful (0)

    • 5/5

      June 22, 2018

      Work fine

      These work great, needed another set after installing long tube headers and a catted x pipe.


      Year: 2009 Submodel: GT

      Helpful (2)

    • 5/5

      June 19, 2018

      Great buy

      Perfect fit over all was very happy with this purchase!!


      Year: 2004 Submodel: GT

      Helpful (3)

    • 5/5

      June 18, 2018

      Good but a bit long for shortys

      I bought these for around 4 to 6 inches reach as my BBK shorty headers were a bit off on the 02 sensor plugs. Had them shortened to fit. These are more for long tube.


      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      June 17, 2018

      plug and issues for me

      item was plug and play, my car did not require any trimming of tabs etc fast shipping...good price


      Year: 2004 Submodel: Cobra

      Helpful (3)

    • 5/5

      June 13, 2018

      02 sensor

      Great product fit right in no hick ups cheap product good bang for your buck


      Year: 2003 Submodel: GT

      Helpful (3)

    • 3/5

      June 12, 2018


      Didnt turn off the check engine light and the tabs didnt line up... at all for one side had to take the tab off with a grinder but did what it was suppose to and well made


      Year: 2001 Submodel: GT

      Helpful (3)

    • 1/5

      June 07, 2018

      These were incorrect for my car

      I purchased these putting all my information in for the correct vehicle V6 Mustang I put my long tube headers on then went to use the extensions I purchased and they would not fit for the front. They connected to the rear O2 sensors. But that's not what I needed so now I'm back at square one looking online for the Upstream O2 extensions..


      Year: 1998 Submodel: V6

      Helpful (4)

    • 4/5

      May 31, 2018


      Fast and easy install minimum modification to get it to fit


      Year: 2006 Submodel: GT

      Helpful (2)

    • 5/5

      May 30, 2018

      O2 Sensor

      Great deal. Wonderful product. replaced with no problems at all.


      Year: 2004 Submodel: GT

      Helpful (3)

    • 1/5

      May 25, 2018

      Doesn’t Fit

      I got these to install on my 03 Cobra after I installed long tube headers. The extensions were long enough but the notches on the connectors did not line up right to connect to line going to the computer. American Muscle gave me a full refund without any hassle. There’s a lot of people that have had the same issue. These connectors need to be pulled off the shelf or made correctly. Do yourself a favor and buy the Bouch 23 inch long O2 sensors. They fit work perfectly, and they are not to long to where you’d have to zip tie them out of the way.


      Year: 2003 Submodel: Cobra

      Helpful (3)

    • 5/5

      May 16, 2018

      97 Ford mustang GT

      Did longtube headers on the 97 Ford mustang GT and got the O2 extension and they were just what I needed to finish the job great product


      Year: 1997 Submodel: GT

      Helpful (3)

    • 1/5

      May 08, 2018

      O2 sensor extensions

      These extensions did not fit the upstream O2 sensors (green sensors) on my 2001 v6 mustang as advertised. This car also has a blue and a purple downstream sensor. They did fit the blue sensor but the downstream sensors are easy to get to and don’t need the extensions.


      Year: 2001 Submodel: V6

      Helpful (2)

    • 1/5

      May 03, 2018

      I can't recommend

      I purchased these to make installation of headers easier. These don't always work. No O2 info reaching computer. I have purchased new O2 sensors to make sure it wasn't the sensor, no change. AM, find a better product.


      Year: 2009 Submodel: GT500

      Helpful (3)

    • 5/5

      April 30, 2018

      great fitment

      great fitment great product fast shipping perfect leght tnks


      Year: 1999 Submodel: GT

      Helpful (4)

    • 1/5

      April 28, 2018

      It did not fit my mustang

      Product did not fit my sensors, have to modified my sensors to fit the product, not happy about this


      Year: 2000 Submodel: GT

      Helpful (3)

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