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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

    People Who Bought This Item Also Bought

    Most Helpful Reviews

    o2 Extensions for Headers

    The two ends and slot on each sensor extension were the same asymetrical. The two ends and slots on the o2 sensors that plug into the header are symterical. I guess ill have to grind of part of the sensor ...

    Read More
    Helpful (12)

    O2 Sensor Extenders

    I needed these after installing my MAC long tube headers, these extenders in addition to the longer wires on the NTK O2 sensors give you PLENTY of wire to work with, just what I needed. Everything plugged ...

    Read More
    Helpful (11)

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

    Customer Photos (13) Submit Your Photo

    View All 13 Photos

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    16 Questions / 6 Answers

    Ask a Question

    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)

    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?


    • These SR Performance O2 Sensor Extension Kit only work with most pre-2010 models and will not work on a 2014. To turn off the check engine light, you would need a custom tune to disable to o2 sensors. This can be done with a Bama Tuner with custom tunes, displayed in the link below:


    Helpful (0)

    will this fit on my 2006 4.0 mustang for the downstream o2 sensors?


    • Hello! Yes, the SR Performance O2 Sensor Extension Kit will fit your 2006 mustang.


    Helpful (0)

    Will these work and fit properly on MAC long Tube headers??


    • The SR Performance O2 Sensor Extension Kit would work just fine with the Mac long tubes.

      Rob D

    Helpful (0)

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    Customer Reviews (100+) Write a Review

    Overall Rating 4.6

    out of 5 stars

    • 2/5

      May 27, 2010

      o2 Extensions for Headers

      The two ends and slot on each sensor extension were the same asymetrical. The two ends and slots on the o2 sensors that plug into the header are symterical. I guess ill have to grind of part of the sensor or exension to make it fit...


      Helpful (12)

    • 5/5

      June 24, 2010

      O2 Sensor Extenders

      I needed these after installing my MAC long tube headers, these extenders in addition to the longer wires on the NTK O2 sensors give you PLENTY of wire to work with, just what I needed. Everything plugged together with no problems and I tucked the extra wire out of the way with some zip ties.


      Helpful (11)

    • 5/5

      May 12, 2010

      Easy Install

      This an easy do it yourself project for any one who wants to replace their mid pipes with an off-road applicatoin. I needed these in conjunction with a pair of MIL eliminators keep my SES light off after installing an off-road X-Pipe. My 04 GT sounds amazing and and it was an easy DIY project in the garage. Thanks American Muscle, keep up the outstanding work.


      Year: 2004 Submodel: GT

      Helpful (7)

    • 5/5

      December 08, 2009

      O2 Sensor Extension Kit

      Nice part, simple to install. Fits perfect and works great without problems. Just plug and play.

      Christian K.

      Helpful (5)

    • 5/5

      May 02, 2012

      Is what it is

      I had shop install exhaust today and I bought the Pypes off road X-Pipe and you need these. Once I got the x pipe it said 24" O2 sensor extensions but I already had these in so I figured i'd see if they would work and he said they did. So had no problems. Great product!


      Year: 2002 Submodel: V6

      Helpful (4)

    • 4/5

      March 27, 2012

      necessity for long tubes

      these are generic enough that they work for pretty much all years but you may have to nip an alignment pin off to make it work. I had to, but it won't impact how it aligns or clips.


      Year: 1994 Submodel: GT American Muscle

      Helpful (3)

    • 5/5

      January 11, 2016

      Excellent perfect fit

      Used on my 1992 f150. Put on new headers and exhaust and needed extra length to reach original plug. Just what the doctor ordered.


      Year: 1992 Carbondale, Colorado

      Helpful (2)

    • 3/5

      February 10, 2013

      Only works after alteration

      The keys on the plug and receptacle do not line up with the corresponding plugs from the car. You have to cut off the little plastic keys in order to make it fit. It's not hard to do, but it may catch you off guard if you are not anticipating it. After you cut them off the pins line up just fine, and the clip still holds the plug together. So it does work.


      Year: 2005 Submodel: GT

      Helpful (2)

    • 5/5

      September 23, 2012

      Good fit!

      I bought the pair of extensions, works just as intended. Great buy if you have a modified exhaust system.


      Year: 2000 Submodel: V6 OKC

      Helpful (2)

    • 5/5

      May 10, 2009

      o2 Extensions

      I got an off road h from JEGS and they so happened to put the o2 sensor bungs significantly further downstream than the sock pipe. Bought these extensions and the problem was solved.

      Andy M.

      Helpful (2)

    • 5/5

      June 07, 2017

      Great product

      When I installed my pypes h pipe one of my 02 sensors was very tight, these connecters plugged right in and gave me all the extra slack that I wanted.


      Year: 2010 Submodel: GT

      Helpful (1)

    • 5/5

      April 20, 2017

      Works, as always

      Everytime I run long tubes, I buy these from AM. Never had an issue.


      Year: 2007 Submodel: GT

      Helpful (1)

    • 5/5

      April 08, 2016

      Needed for true duals on V6 Mustangs.

      I got these because my factory wiring harnesses were too short to reach the back of the X-Pipe. Fit perfectly.


      Year: 2003 Submodel: V6

      Helpful (1)

    • 4/5

      February 04, 2016

      They Work

      I installed these with my new O2 sensors on an 04 GT and haven't had any issues with them at all. I only needed the drivers side with my UPR catted x and it plugged right into the sensor after trimming the little plastic "studs" on the sensor. Pretty simple install and easy to zip tie to the chassis and get out of the way.


      Year: 2004 Submodel: GT New Bern, NC

      Helpful (1)

    • 5/5

      March 12, 2013

      Check Engine Light is Off

      easy plug and go install. Disco'd the battery for ten minutes and boom - the Check Engine light is off and it feels good when that dammn thing is off.


      Year: 2008 Submodel: GT

      Helpful (1)

    • 3/5

      February 18, 2013

      Needs a "how these work" instructional sheet.

      These really need a set of instructions instructions outlining how these work exactly to ensure correct installation.


      Year: 2004 Submodel: V6 Brentwood, TN, USA

      Helpful (1)

    • 5/5

      April 09, 2012

      02 Sensor Extenders

      Exactly what I needed for my new exhaust (SLP Loudmouth II, BBK Catted X-Pipe). Extends to perfect length and works wonderfully. Reccomend to get for any new exhaust just in case old ones can not go proper length.


      Year: 2003 Submodel: GT Phoenix, AZ, USA

      Helpful (1)

    • 5/5

      March 23, 2012

      O2 Sensor Extenders

      These O2 sensor extenders worked flawlessly with the installation of my ceramic MAC longtube headers.


      Year: 1997 Submodel: V6 Northern Virginia

      Helpful (1)

    • 4/5

      April 02, 2010

      O2 sensor ext.

      Nice. Fits perfectly, but the passanger side extension was to long, so I had to tie part of the wire to the underbody.


      Helpful (1)

    • 5/5

      July 18, 2009

      BBK o2 extension

      I ordered these and prompty recieved them. They came to my work no problem, and I put them in the following weekend. No problems or codes have been thrown since installing them. I did have to shave off a tab that was on them, to get the connector to fit to my stock 02 snesors, but other than that, it worked flawlessly. I have ordered before from American Muscle, and I have NEVER been dissapoointed. They sell great products, and prices are just right. I would reccomend not on the procduct, but buy from American Muscle.


      Year: 2002

      Helpful (1)

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