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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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    19 Questions / 23 Answers

    Ask a Question

    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)

    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)


    • The SR Performance O2 Sensor Extension Kit is used to extend the length of the front O2 sensors in order to allow them to reach the front O2 sensors, and will not have any effect on the Check Engine light. Depending on the year of your mustang, MIL eliminators, or a tune must be used to eliminate catalyst efficiency codes. It should be noted that when installing long tube headers, a matching brand shorty mid pipe must be installed for proper fitment.

      Rob D

    Helpful (0)

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    Customer Reviews (100+) Write a Review

    Overall Rating 4.5

    out of 5 stars

    • 5/5

      June 19, 2018

      Great buy

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


      Year: 2004 Submodel: GT

      Helpful (0)

    • 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 (1)

    • 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 (1)

    • 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 (1)

    • 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 (1)

    • 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 (0)

    • 4/5

      May 31, 2018


      Fast and easy install minimum modification to get it to fit


      Year: 2006 Submodel: GT

      Helpful (1)

    • 5/5

      May 30, 2018

      O2 Sensor

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


      Year: 2004 Submodel: GT

      Helpful (2)

    • 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 (2)

    • 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 (1)

    • 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 (1)

    • 5/5

      April 30, 2018

      great fitment

      great fitment great product fast shipping perfect leght tnks


      Year: 1999 Submodel: GT

      Helpful (1)

    • 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 (1)

    • 3/5

      April 25, 2018

      They dont fit ?

      Got these and it says it fits my year but no luck. The tabs wont line up.


      Year: 1998 Submodel: GT

      Helpful (1)

    • 4/5

      April 17, 2018

      6 Codes went away

      Easy to put on. 6 out of 8 codes went away. Strongly recomend. I did have to cut off the nub to get it to fit. That's why 4 instead of 5 stars.


      Year: 2002 Submodel: V6

      Helpful (1)

    • 5/5

      April 16, 2018

      Very happy purchase

      highly recommend these if you install a X pipe, the Extenders are made of good material and don’t feel cheaply made like other.


      Year: 2004 Submodel: Cobra

      Helpful (1)

    • 5/5

      April 05, 2018


      Worked as expected and had more than enough reach to get to the spot i needed. Great product


      Year: 2002 Submodel: GT

      Helpful (1)

    • 5/5

      April 04, 2018

      Worked great

      These worked great, needed an extension kit for an x pipe and long tube install they worked just fine.


      Year: 2004 Submodel: Cobra

      Helpful (1)

    • 5/5

      March 29, 2018

      works fine. came in handy

      did just what it was supposed to. extended the 02 sensor wires which I needed when I installed my Bassani X Pipe


      Year: 2007 Submodel: GT

      Helpful (1)

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