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BBK 70mm Throttle Body (96-04 GT)

38 Reviews
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  • Item #56002
  • MPN# 1700

  • Market Price $241.49
  • You Save 13% ($31.50)
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Product Videos Customer Photos
  • Gain Up to 12 HP.
  • Improves Throttle Response.
  • Great for Naturally Aspirated 'Stangs.
  • Lightweight Aluminum Construction.
  • Bolt-On Installation.
  • Fits 96-04 GT Mustang.
  • CARB EO Number: D-245-13 (1996-2001 Only)
Gain Up to 12HP. Gain up to 12 horsepower by replacing your restrictive factory throttle body with a free-flowing BBK 70mm throttle body. Your stock throttle body chokes off the airflow right where it matters most - by letting your Mustang's engine breathe better, you'll increase power and improve throttle response for power you can really feel.

70MM Bore. This BBK throttle body features a generous, free flowing 70mm single bore design that is great for naturally aspirated Mustangs.

CNC Machined Aluminum. BBK's throttle bodies are cast from high quality, lightweight 356 aluminum alloy that is finished using CNC machining to ensure a precision fit. They feature double-sealed bearings, o-ringed throttle shafts, and precision die-stamped linkages to ensure a long life and maximum performance for your Pony.

Bolt-On Installation. The BBK Throttle Body is designed for a straightforward installation and includes all necessary hardware. It is designed to be installed reusing the factory throttle body gasket making it a no-hassle mod.

Application. This BBK 70mm Throttle Body is designed for the 1996 to 2004 Mustang GT with the 4.6L engine.

Technical Notes. This BBK throttle body is CARB certified (CARB EO Number: D-245-13) and 50 state legal.

Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Throttle Body
  • (1) Throttle Body Gasket
  • (1) Black Plastic TPS Bushing
  • (1) Pipe Plug
  • (4) Throttle Body Screws
  • (2) TPS Screws
Installation Info
Tech Specs
Throttle Body Specifications
Bore Size: 70mm Single or Twin Blade: Single
Year: 1996-2004 Model: 4.6 GT
Material: Aluminum Finish: Cast Aluminum
Manufacturer: BBK Computer Tune Required: No
Will it fit my Mustang?
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Does not fit 2001 Bullitt

Most Helpful Reviews


So I replaced the old factory Throttle Body with this BBK 70mm. I was impressed with how well it fit, and it came with new gasket, all the required bolts, and even a new tps sensor!.. The performance gain ...

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Helpful (1)

Easy upgrade to unleash power

I installed this with a cold air intake. Right off the bat I noticed better throttle response. Install was easy and took less then an hour. One suggestion I would make is to get the plenum as well. Save ...

Read More
Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 38 Reviews

Review & Install Video

Hey guys, I’m Justin with, and today I have two different throttle body options from BBK Performance. I’m taking a look at the 70 and 75mm throttle body for the 4.6L V8 found in all 96-04 Mustang GTs. BBK is one of those companies that lives and dies on Mustangs and late model EFI performance, and it shows with all their quality parts, including these throttle bodies. Now both of these options would be a huge upgrade over the ultra restrictive 56mm factory throttle body. Now depending on your setup either the 70 or 75mm throttle body might work out a little better for you, but that all depends on your mods. The 70mm version will be great for those of you with mild bolt-ons, you know, intakes, header, exhaust, those sorts of things. Now this would be a great complement to those mods, and free up any additional power being held back by an ultra restrictive factory throttle body. The larger 75mm version is geared towards more of a radical setup – big cams, nitrous, high compression or forced induction, that would need maximum airflow. Both of these throttle bodies are CNC’d from high quality aluminum alloy and feature beefed up components that will only add to the longevity and quality of these throttle bodies. Neither of these throttle bodies require a tune but it’s always recommended to make the most out of any additional mods. Installing these new throttle bodies is very straight forward and should only take you about an hour. All you have to do is remove the factory throttle body, transfer the TPS sensor over to the new BBK throttle body, using the included gasket. After that, reinstall the new BBK throttle body and you should be good to go. So if you’re looking for more ways to help your 2 valve 4.6 breath a little easier, and you’ve already taken care of the basics, then you’ll definitely want to check out these throttle bodies from BBK Performance.

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4 Questions / 7 Answers

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Is it recomended to also upgrade the upper intake plenum? i've been doing a little research and it seems like you do no need to


  • Yes, I would change the plenum as well. American Muscle sells a combo kit with a larger plenum and throttle body


    Good Answer (0) (1)

Show 2 more answers Question Resolved

Can this be mounted to the 78mm body? I bought the 78mm BBK unit from AM and my GT is stumbling at hard accel. Either looking for straight forward answer re: updating my tune/program or just dropping back to the 70mm TB. Suggestions?


  • If your Mustang only has a few bolt-on mods, then it's likely the 78mm Throttle Body is too much. Without a heavily modified engine or FI, there isn't enough air flow to benefit from such a large TB (the 78mm). The 70mm Throttle Body is more than enough for any mild to moderately modded Stang and should help correct the issue you described. Hope this helps! If you have any further questions, don't hesitate to give us a call!


    Good Answer (1) (0)

Question Resolved

Upgrading to a 70mm throttle body If I purchase a 70mm throttle body, do I have to do any tuning after installation? Also , should I upgrade the MAF sensor as well? Thanks Peter


  • You can upgrade to this 70mm throttle body without needing a tune or upgrading the MAF. That said, you would see the best performance gains when combined with a tune. Hope this helps!


    Good Answer (1) (0)

Show 1 more answer Question Resolved

It looks like this throttle body is CARB certified, but only for 96-01 models. Does this mean my 02 GT wouldn't pass smog in California with this installed? If that's the case, are there any 70mm throttle bodies available that would pass smog on my 02 GT?


  • The BBK 70mm Throttle Body (96-04 GT) will have a CARB EO number for 96-01 Gts however for the 2002 and up it will not pass CARB regulations. However we do not carry any throttle bodies that will meet CARB regulations for a 2002 GT.


    Good Answer (0) (0)

Question Resolved

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Customer Reviews (38) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Less than 1 Hour

  • Performance Gain 4.333333 4.3
  • Fit 5 5

  • 5/5

    September 22, 2016

    Throttle body

    Car runs and sounds alot better and added more horse power. Its starting to sound like i want it to and run how i want it to.


    Year: 2004 Submodel: GT

    Helpful (1) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    September 19, 2014

    70mm bbk tb

    this part works just like it should even after 5 years of use. looks good under the hood, and provides a gain in power. for the price, time to install, and appearance factor this is a worthy mod for anyone with a mustang.


    Year: 1998 Submodel: GT Detroit, MI, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 23, 2012

    Easy upgrade to unleash power

    I installed this with a cold air intake. Right off the bat I noticed better throttle response. Install was easy and took less then an hour. One suggestion I would make is to get the plenum as well. Save yourself the time and do it together. It looks great and the sound is awsome as well!! The airflow is greatly increased and will snap your head back on WOT. Great customer service by American Muscle only adds to the purchase.


    Year: 2002 Submodel: GT Pittsburgh, Pa

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 04, 2012

    BBK FTW!

    So I replaced the old factory Throttle Body with this BBK 70mm. I was impressed with how well it fit, and it came with new gasket, all the required bolts, and even a new tps sensor!.. The performance gain was decently noticeable and smoother vs stock. But I also Have an AEM short ram intake and C&L Plenum... Its a great combo if you live in CA because its all Carb Legal.


    Year: 2000 Submodel: GT

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    September 12, 2011

    BBK 70mm Throttle Body (96-04 GT)

    What a great buy! Installation was a snap, everything fit perfectly. The stang sounds and runs wonderful! I can really feel the H.P. gain at higher speeds. Step on the pedal and a way you go. Thank You American Muscle!! Mark V.


    Year: 2002 Submodel: GT Rohnert Park, CA

    Helpful (1) (0)

  • 5/5

    June 14, 2010


    very easy to install...felt a little stronger and can hear a difference too.


    Helpful (5) (0)

  • 5/5

    November 01, 2009


    It is works great...thanks American Muscle...


    Helpful (5) (0)

  • 5/5

    July 01, 2008

    03 GT

    Immediately felt the increase in power. Added with a BBK Cold Air Kit and it not only runs great - it looks great as well. You can hear the air whistle at the Throttle Body and bringing the increased air to the plenum. Easy to install in less than 30 minutes!!


    Year: 2003 Submodel: GT

    Helpful (4) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    January 30, 2012

    good gain for the time and money

    A very easy installation on either a stock intake or a CAI. This fits just as well as the stock throttle body and gives a noticeable improvement in throttle respose. This part is a very good early modification for a performance enthusiast. Combine with a tune for even better results. This product exceeded expecations, thanks AM!


    Year: 2004 Submodel: GT Chicago, IL

    Helpful (3) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 21, 2012

    all gain no pain

    quick and easy to install. took about 30 minutes.. nice whistle sound at a certain throttle response. noticable difference at peak rpms. no more lag. cant wait to see how much more it does with my programmer updated by bama


    Year: 2004 Submodel: GT

    Helpful (2) (1)

  • 4/5

    Installation Time: Afternoon

    October 10, 2011

    Throttle response!!

    Instant throttle response. Great product. Got HP gains immediately. Thanks American Muscle.


    Year: 2002 Submodel: GT Michigan

    Helpful (1) (0)

  • 4/5

    December 12, 2008

    BBK 70mm Throttle Body

    Pretty easy to install. Didnt feel much of a difference but it was worth it.


    Helpful (2) (2)

  • 2/5

    February 26, 2010

    bbk throttle body

    BBK says you get 8-10 extra HP but here's my take. you get that power if you are going for a heavily modified stang. If its force inducted, you will get more power because you are getting more airflow. However, the naturally aspired mustang only takes in so much air and even too big a TB will actually hurt performance. My advice is do your homework and don't follow the crowd. Everyone runs a different setup and the gains if any on a N/A car will be minimal. It would be great if these companies would clarify the "true" power gains of these mods on modified and N/A cars....aside from that AM is the best!!!


    Helpful (11) (12)

  • 5/5

    Installation Time: Less than 1 Hour

    October 21, 2011

    It was worth the money.

    It did every thing nthe ads said it would do. The motor runs much smoother.


    Year: 2000 Submodel: GT california

    Helpful (0) (1)

  • 3/5

    June 19, 2010


    Ok so the rating is not so much for the part itself, as it's a fine product and though it doesn't provide the HP that its said to (which I already knew) the air flow is noticeably louder and seams to give the car a little more breath when wide open, BUT my 3 stars are due to the fact that on my first run in the car when I floored it the thing stayed wide open !!!!, was installed properly by the way as I'm a mechanic by trade.

    2002 GT

    Helpful (6) (7)

  • 5/5

    Installation Time: Less than 1 Hour

    March 25, 2016

    BBK Awesome!!!!!

    Combined this with a CandL plenum. Best upgrade I've done yet.. The only other upgrades were cai , accell supercoils , chambered mufflers with stock exhaust.. The TB and plenum really woke this engine up. Ready for gears and a tune!!! Great products great sevice..


    Year: 2003 Submodel: GT

    Helpful (0) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    February 02, 2016


    Ordered on the weekend and arrived 5 days later. Took less than an hour and a half with your most basic tools. After installing i could feel the difference. Its not a huge difference but you can tell its a bit more responsive. Smoked an infinity afterwards along with my other american muscle bolt ons. The guy said "good s***" expecting an easy win haha.


    Year: 1999 Submodel: GT demver colorado

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 24, 2015

    04 Mustang

    Great product. With standard shifting product came in 4 days. Was easy to install. Already had a bbk cold air airtake installed and after installing the bbk 70mm throttle body you can definetly feel the difference in horsepower. I would recommend this product.


    Year: 2004 Submodel: GT Port Hueneme, Ca

    Helpful (0) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 11, 2015

    BBK 70mm Throttle Body (96-04 GT)

    Good quality material and finish. Good fit. The price was far better than local suppliers. Installation was smooth and took less than an hour. Noticeable power gain at over 3000 RPM. Well worth the time, effort and investment.


    Year: 2004 Submodel: GT Waynesville NC

    Helpful (0) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    July 15, 2015

    Good throttle body!

    The throttle body is very easy to install. It got shipped to me and I removed my stock throttle body with now problem. I opened the box and saw my new throttle body and I didn't know there would be a brand new TPS along with the throttle body. I installed in on the new BBK body and then installed the new BBK on my car. It started right up and sounded pretty good. I thought it would make a bigger difference on the power but it's a better difference on power and not a HUGE difference. I have Steeda Underdrive pulleys, High Output Coils, Cold Air Intake, and premium NGK spark plugs. I thought it would make all of those components work more in synch but the power is ok. It does feel like it sucks a lot more air though which should equal more horsepower. I will have to see how it does with my fuel consumption after I return to work and drive it daily for over 40 miles. But overall, I recommend it but if you are looking for extreme power, this might now do it.


    Year: 2002 Submodel: GT Merced, CA

    Helpful (0) (0)

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