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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 / 5 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?


    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 4.6

    out of 5 stars

    • 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 (0)

    • 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)

    • 5/5

      March 29, 2018

      Good Product

      They work as intended and I can't ask for nothing better. I'd buy them again and recommend them to anyone looking for this product


      Year: 2010 Submodel: GT

      Helpful (1)

    • 5/5

      March 26, 2018

      Great Product!

      They work great with my new exhaust system. My check engine indicator doesn’t stay on anymore...100!


      Year: 2007 Submodel: GT

      Helpful (1)

    • 5/5

      March 23, 2018

      02 Extensions

      Had to buy these for my bbk x pipe. Everything fit just like it said.


      Year: 2002 Submodel: GT

      Helpful (1)

    • 5/5

      March 13, 2018

      Sr Performance

      It worked great with my header and xpipe install and no check engine light.


      Year: 2006 Submodel: GT

      Helpful (2)

    • 5/5

      March 05, 2018

      O2 Sensor extension kit

      Not need for cutting any wires just plug and play perfect fit when using long tube headers.


      Year: 1994 Submodel: Cobra

      Helpful (2)

    • 3/5

      March 01, 2018

      They work

      They work after you grind off the alignment tabs.. but they do work really well after you do that.


      Year: 2008 Submodel: GT

      Helpful (2)

    • 4/5

      February 23, 2018

      02 sensor extenders

      Made it very easy to connect the 02 sensor. Just had to work a little to connect them and had to remove tab on end so they would connect. Worth the buy


      Year: 2004 Submodel: GT

      Helpful (3)

    • 5/5

      February 09, 2018


      These O2 extension kits are great. Cheap and they work win, win, they are strong and durable


      Year: 2007 Submodel: GT

      Helpful (3)

    • 4/5

      February 05, 2018

      02 Sensors

      Everything went fine with install after I had to cut the ears off of them to fit my OEM ones. I just took my Exact-o knife to them.


      Year: 2003 Submodel: Cobra

      Helpful (3)

    • 4/5

      February 02, 2018

      Sr 02 extenders

      Great product, only had one problem. But simple fix. Had to take alignment pin out to put on. Other than that great product


      Year: 2001 Submodel: GT

      Helpful (3)

    • 5/5

      January 28, 2018

      Great product!!

      As always American Muscle never disappoints. I needed these after I installed my longtube headers. Just grind down the the two tabs on the side and you're good to go! A product I would definitely buy again.


      Year: 2003 Submodel: GT

      Helpful (3)

    • 4/5

      January 23, 2018

      Great fit

      Easy to put on works great. Not much else to say about extensions


      Year: 2001 Submodel: GT

      Helpful (3)

    • 5/5

      January 10, 2018

      Fit like a charm

      Installed my Log Tube Headers with my High Flow Catalyst and True Dual Exhaust system and bought me 2 sets of these because my car has 4 sensors (Front and back) and didn't need the Code Delete Eliminator version at all and works just fine. Thanks again to American Muscle for making my car run better ;)


      Year: 2006 Submodel: V6

      Helpful (3)

    • 5/5

      January 08, 2018


      Perfect fit a must for long tube headers tucked away nice and neat


      Year: 1993 Submodel: LX

      Helpful (3)

    • 5/5

      January 07, 2018


      They worked just like the should have! Not a single complaint with them. I have been using them in my car now for over a year.


      Year: 2003 Submodel: GT

      Helpful (3)

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