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BBK Long Tube Header O2 Extensions and Hardware Kit (15-17 GT)

Market Price $68.99 You Save 13% ($9.00)
Our Price

$59.99

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  • Item 389761
  • MPN# 16332

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Features, Video & Details

  • BBK O2 Extension and Hardware Kit
  • Required for Installation of Long Tube Headers
  • Includes Two 6-Pin Harnesses and Five Bolts
  • Fits 2015-2017 5.0L GT Mustangs

Review & Installation Video

Review & Install Video

The BBK Long Tube Header O2 Extensions and Hardware Kit is available for any 2015 or newer Mustang GT owner who has or is looking to upgrade to a set of long tube headers and wants to extend their O2 sensor harness to the bongs on the tubes in order to plug them into the sensors. The installation is literally as easy as plugging them in, which is why I'm giving it one out three wrenches on our difficulty meter. The O2 sensor harness on the S550s are just a little too short to reach the new bongs on the set of long tube headers, so the extensions will make up for that length. The quick plug-and-play style connectors have six pin harnesses and five bolts that will help get these installed and ready to go. They clip right into the factory harness on one end, then into the back of the 02 sensors, and your long tubes on the other. They're specifically used for upstream sensors, since these are the ones that are need correcting. Without these, you'll be left with useless 02s, which, of course, is not exactly street legal in most areas, and of course, will help make the exhaust gases not flow as properly, which can then lead to a poor engine performance. They have a sleeve lining on the wiring that gives them a layer of heat protection from the exhaust metal, which extends their lifetime and makes them a little bit more durable to withstand the elements. The kit comes with two extensions, one for each side of the exhaust, and will run at about 60 bucks for what you see here, which, again, is necessary if you want those O2s plugged in properly. The plug-and-play harness eliminates any need to splice in or fabricate your own set, which a lot of guys would have to do otherwise, so for the price, you're definitely making your life a lot easier, in my opinion. The installation comes with the bolts necessary to get the job done, like I said, and it really shouldn't take too long to tackle. I'd say, about 30 minutes to an hour in the driveway at home, if that. You wanna have a very basic ratchet and socket set, as well as a jack stand and jacks to safely secure the car, of course. Giving this one out of three wrenches on our difficulty meter. Now, you wanna be able to jack the car up, support the weight, plug the extensions into the factory harness in the O2s, on the long tube headers, and secure the wiring back. Obviously, plug the other end in, and you're good to go. Obviously, not too hard to tackle in your driveway at home. Just to wrap things up, if you're the owner of a 2015 or newer Mustang GT with long tube headers, you might wanna check out the BBK Long Tube Header O2 Extensions and Hardware Kit, which is available right here at americanmuscle.com.

Required For BBK Long Tube Headers. When installing a set of BBK long tube headers on your Coyote powered S550 Mustang the factory front oxygen sensor wire harnesses come up short and won't reach the upstream O2 sensors. That is why you will need a BBK Performance O2 Extension and Hardware Kit to bridge the gap allowing you to reconnect your sensors in an easy plug-n-play fashion.

Application. This BBK Performance O2 Extension and Hardware Kit is designed to extend the front (upstream) O2 sensor harnesses on the 2015 to 2017 GT Mustang models.

Please Note. O2 Sensors are not included with this Extension and Hardware Kit.

Fitment: 2015 2016 2017 Details

What's in the Box
  • (2) O2 Harness Extenders
  • (5) Bolts
Installation Info
Tech Specs
Will it fit my Mustang?
  • GT - 16, 15, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
They work.

Bought them had shop install no lights on dash. Ordered these with mid pipe and long tubes.

Helpful (2)

5/5
2016 GT, BBK LTH Install

The headers I received had extensions with them in the the hardware box. I don't know what year mustang they are for but they didn't fit any of my 02 connectors. These extensions did fit on my 02 connectors. ...

Read More
Helpful (1)

Overall Rating 4.7 out of 5 stars
Read All 14 Reviews

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Customer Reviews (14) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.909091 4.9
  • Exhaust Note 4.909091 4.9
  • Fit & Finish 5 5
  • Bang For Your Buck 4.909091 4.9



  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    December 23, 2016

    They work.

    Bought them had shop install no lights on dash. Ordered these with mid pipe and long tubes.

    Fidty

    Year: 2015 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    September 04, 2017

    2016 GT, BBK LTH Install

    The headers I received had extensions with them in the the hardware box. I don't know what year mustang they are for but they didn't fit any of my 02 connectors. These extensions did fit on my 02 connectors. The front 02 wire harnesses don't reach with the LTH, but these fix that problem. They leave a decent amount of excess wire hanging so you will need something like heavy duty zip ties to retain the excess.

    Bruno3112

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    July 03, 2017

    Ext

    They work like they should perfect length and look great no trouble installing easy plung and play

    Richard

    Year: 2017 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 19, 2017

    Did the job

    Was essential do put longtubes on my 2015 mustang gt. Easy plug in play installation, then just zip-tie any slack where ever it fits

    Ricky

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    August 26, 2016

    Great bang for

    This product was exact what I needed to get the job done. I would recommend this product to anyone who has installed long tube headers to their mustang and want to keep their O2 sensors on car.

    Lovelys550

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    August 01, 2016

    O2 Extensions

    Product fit and function are excellent, definitely recommend it if you are installing long tube headers.

    Gearhead

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    July 31, 2016

    Easy install

    Great quality. Easy install. Sound great. Fast shipping as always.

    Mbowens550

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    February 10, 2016

    Perfect Fit

    Works Good And fits my mustang Perfect. O2 sensors are perfect fit would recommend to any one looking for sensors.

    john

    Year: 2012 Submodel: GT california

    Helpful (1)

  • 1/5

    October 15, 2017

    Only had One extension harness

    I brought the extension harness along with my headers but didn’t need them because they came with the headers. Then both sets were the back extenders. They didn’t have the front in neither one of the boxes.

    BritishM

    Year: 2015 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 05, 2017

    Alright

    They are great. They really opened up the sound of my exhaust. The only thing is I brought the extension and they didn’t have the front extension in the box. I wonder will they send me one or give me my money back

    Major

    Year: 2015 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Shop Install

    September 25, 2017

    Effective

    Fit perfectly no problem with length or connections

    Racerx

    Year: 2017 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    July 22, 2017

    02 Extensions

    They do exactly what they need to do, and they're easy to move to your liking.

    Tony

    Year: 2017 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 12, 2017

    Works well

    After buying long tube headers from AM for my 15 gt and I ordered these being cautious to make sure I had the correct extensions for when I got around to doing the install, luckily for me I needed them cause the headers I got from bbl had the wrong bolts (11-14). I don't like that it only comes with one bag of bolts and only 5 of them in that bag when there's 8 bolts per header, but the connectors and quality seems nice and fitment is perfect. They're about 12" long. I placed a call to AM to see if they can include more bolts with the package considering it says "hardware kit".

    RaceRed5Oh

    Year: 2015 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 21, 2017

    Works how it should

    Good price for extensions. Worked exactly how they are supposed to and arrived pretty quickly. Quality seems very good

    17GT

    Year: 2017 Submodel: GT

    Helpful (0)

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