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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

    CA Residents: WARNING: Cancer and Reproductive Harm -

    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 (20)

    5 Top Rated Questions

    I have a 2004 mustang GT and I’m looking forward to buying a BBK o/r x pipe, I don’t want the check engine light coming on so would these help or do I need MIL eliminators?

    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)
    Post Your Question
    10 More Questions
    Will I need these extensions on a 04 Cobra with stock manifolds and a Mac Pro chamber? 1 answer
    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

    People Who Bought This Item Also Bought

    Customer Reviews (100+) Write a Review

    Overall Rating 4.5

    out of 5 stars

    • 5/5

      December 10, 2018

      exactly what was needed

      If you are going from stock cats to high flow single cats you will need these


      Year: 2004 Submodel: Mach 1

      Helpful (0)

    • 5/5

      November 26, 2018

      Fits fine once you clip tabs off the sides

      This item worked great just make sure the tabs on the side of the plug lines up or you cut them off as they are not really needed once pluged in.


      Year: 2003 Submodel: GT

      Helpful (2)

    • 3/5

      November 19, 2018

      2006 Mustang Gt

      do these fit for upstream and downstream for a 2006 mustang gt any issues?


      Year: 2006 Submodel: GT

      Helpful (2)

    • 5/5

      November 13, 2018

      Great product

      Made the installation just that much easier with headers.


      Year: 2004 Submodel: GT

      Helpful (2)

    • 5/5

      November 05, 2018

      Easy install

      Other than sanding the tabs down, they installed easy. Just zip tie the slack up and good to go. Would definitely buy more for the next build.


      Year: 2008 Submodel: GT

      Helpful (2)

    • 5/5

      October 31, 2018

      O2 Sensor extensions

      Perfect did it’s job of taking off the CEL and fit fine one side went perfect, one side I had to lightly mod for it to plug but it’s working just fine.


      Year: 2002 Submodel: V6

      Helpful (2)

    • 5/5

      October 27, 2018

      O2 censor

      Great product, just the length I needed for the long tube headers to reach.


      Year: 2001 Submodel: GT

      Helpful (2)

    • 5/5

      October 22, 2018

      Definitely required with long tubes

      These were definitely required for the installation of Kooks Long Tube Hearders. I actually used 3 extensions, the 3rd came with the headers.


      Year: 2005 Submodel: GT

      Helpful (2)

    • 5/5

      October 12, 2018

      Great product

      Great product, fit perfect and works as it should. Extension harness also looks good with the sheathing and shrink wrap used around the wires for a factory appearance


      Year: 1991 Submodel: GT

      Helpful (2)

    • 2/5

      September 27, 2018

      Cobra 02 extensions

      The tabs where they plug in to the da Tory wiring didn’t match the da Tory plug so I had to grind them away didn’t seem right but they worked


      Year: 1997 Submodel: Cobra

      Helpful (2)

    • 5/5

      September 25, 2018

      just a bit more

      I dropped a 302 into my 96 Ranger and where the o2 sensors ended up was too far away for the factory plugs, these extenders were perfect


      Year: 2012 Submodel: GT

      Helpful (2)

    • 4/5

      September 24, 2018


      They work like they should easy to put on. Came on time.


      Year: 2004 Submodel: V6

      Helpful (2)

    • 5/5

      September 21, 2018

      Must have with long tube headers

      The extension kit is just right length with lil bit extra so can run it the way ya want an plugs right into factory connectors


      Year: 1992 Submodel: LX

      Helpful (3)

    • 5/5

      September 16, 2018

      Worked perfectly

      They are made very very well. With plenty of zip ties I’m not worried one bit.


      Year: 2004 Submodel: GT

      Helpful (3)

    • 4/5

      September 11, 2018

      Quick and Effective

      These are exactly as advertised. Nothing special but did the trick for sure. Measure out to be about a 12" extension. They plugged right in with no issues and sealed tight.


      Year: 2007 Submodel: GT

      Helpful (3)

    • 5/5

      September 10, 2018

      Good product

      Easy to install, plenty of length to use on my application


      Year: 2004 Submodel: GT

      Helpful (2)

    • 5/5

      September 07, 2018

      Can’t touch it!

      These are the greatest. I needed to remove exhaust. When I tried to unplug the two pre cat O2 sensors it was almost impossible. I couldn’t get my hands between engine and firewall. These extensions make access to the plugs a snap. Just make sure to route them safely from exhaust and any operating linkages.


      Year: 2002 Submodel: GT

      Helpful (2)

    • 5/5

      September 03, 2018

      A Necessity for long tube headers!

      After trimming off the tabs on the sides of the sensors, they were a perfect fit. Be sure to tie back the extra length once installed. Can't beat the price for the quality.


      Year: 2003 Submodel: GT

      Helpful (3)

    • 1/5

      August 25, 2018

      Not compatible.

      went to install them and the clips are not the same with the stock wiring harness. I would say that either i don't have the original harness bunny ears or make sure that you get tree right ones before you buy.


      Year: 2000 Submodel: V6

      Helpful (2)

    • 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 (4)

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