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Accufab Twin 60mm Throttle Body (99-01 Cobra; 03-04 Mach 1)

Item 15009
AmericanMuscle no longer carries the Accufab Twin 60mm Throttle Body (99-01 Cobra; 03-04 Mach 1). Please check out 1999-2004 Ford Mustang Throttle Bodies for an updated selection.

Features & Details

  • Up to 10 More Horsepower
  • Better Throttle Response
  • Twin 60mm Diameter
  • High Quality 356 Aluminum Construction
  • Fits 99-01 Cobra and 03-04 Mach 1 Mustangs
Feel the Power. Replace your SVT Cobra or Mach 1 Mustang's restrictive stock 57mm throttle body with this top of the line twin 60mm unit from Accufab and get your DOHC the air it's been lacking. This upgrade will greatly improve your Pony's throttle response and is the perfect starting point for future modifications.

Better Air Flow for More Power. This Accufab Twin Blade 60mm Throttle Body increases the stock airflow from 1089 CFM to an impressive 1284 CFM to produce a dyno proven 10 more horsepower on a factory DOHC 4.6L Mustang, with modified Pony's seeing much larger power gains.

Exceptional Quality. Accufab's quality is second to none - this throttle body is CNC machined from 356 billet aluminum, and the exterior is polished to an eye-catching finish. The shafts are also CNC machined from stainless for durability and quality, and they use only the best components for unparalleled reliability and performance.

Application. This Accufab Twin 60mm Throttle Body is specifically designed as a direct bolt on for use on the 1999 to 2001 SVT Cobra and the 2003 to 2004 Mach 1 Mustangs equipped with the DOHC 4.6L V8.

Technical Notes. Idle Speed should only be set by adjusting the Throttle Position Sensor. DO NOT adjust any screws on the Throttle Body. These screws are pre-set at Accufab.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
Hardware included:
  • Throttle Body Gasket
  • TPS mounting screws
Installation Info
Tech Specs
Throttle Body Specifications
Bore Size: Twin 60mm Single or Twin Blade: Twin
Year: 1999-2004 Model: 99-01 SVT Cobra
and 03-04 Mach 1
Material: Aluminum Finish: Polished
Manufacture: Accufab Computer Tune Required: No
Will it fit my Mustang?

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      Questions & Answers (6)

      5 Top Rated Questions

      Is this legal in the state of California? will it pass smog? Thanks

      • The Accufab Twin 60mm Throttle Body will not pass Carb regulations no.

      Helpful (1)

      Does this require a tune?

      • A tune is not required. However, we generally recommend one to see the best possible performance gains from this throttle body.

      Helpful (0)

      They offer the single blade one for the 01 buillitt mustangs and all the mounting are the same as the others tbs that is offered yet why dose. It say this dual blade one won’t work properly on the buillitt system.

      • The Accufab Twin 60mm Throttle Body is only designed to fit the 99-01 Cobra, and the 03 and 04 Mach 1.

      Helpful (0)

      Will this work on an 03-04 Cobra?

      • The Accufab Twin 60mm Throttle Body will work on an 03-04 Cobra.

      Helpful (0)

      I was wondering of there is any response to the hanging idle issues or complaints that the cruise control cable wouldn't fit on these throttle bodies? I've read these complaints about most the aftermarket throttle bodies for mach 1s. Is there a fix for these issues, is it installer error, or computer re-learn? Some clarity on these common complaints may sway my choice to buy one. Thanks.

      • We have seen occasional issues with the Accufab Twin 60mm Throttle Body having a hanging throttle body, and they seem to fall into one of two distinct issues. The first is a simple fix, where the TPS voltage is off and needs to be adjusted. The second is a defective unit, which, once replaced, corrects the issue. This usually stems from a throttle body where the idle was not set properly at the factory.

      Helpful (0)
      Post Your Question
      1 More Question
      Does this fit with JLT Next Gen CAI? Will this throttle body fit on my 01 cobra with a JLT Performance Next Generation Cold Air Intake on it? Are power gains noticeable? 1 answer

        Customer Reviews (27) Write a Review

        Overall Rating 4.5

        out of 5 stars

        Installation Time:Less than 1 Hour

        • Performance Gain 4 4
        • Fit 4.384615 4.4

        • 5/5

          Installation Time: Less than 1 Hour

          July 30, 2018

          Sweet Throttle body

          I really like how easy it was to install this babd boy, way better throttle response, looks great and a noticeable difference in power, only downside to me is throttle spring is a bit stiff, but its slowly breaking in, overall great product.


          Year: 2001 Submodel: Cobra

          Helpful (4)

        • 5/5

          Installation Time: Less than 1 Hour

          July 08, 2018


          Looks and works great. No idle issues! This is the best throttle body to get for your Cobra.


          Year: 1999 Submodel: Cobra

          Helpful (6)

        • 5/5

          Installation Time: Less than 1 Hour

          March 17, 2018

          100 times better than Twin 65mm BBK

          I had the BBK Throttle Body and it was terrible, it made the pedal sticky and the whole driving experience bad. But once I put the Accufab on there it was a night and day difference. The pedal is smoother and has great throttle response. Thanks AM, you guys have one happy coustomer!


          Year: 2003 Submodel: Mach 1

          Helpful (6)

        • 1/5

          July 03, 2017


          So i just tried to switch out the BBK 65 mm throttle body that has a high idle issue with this accufab 60 mm in a hope to fix that problem, but while i was trying to install it the TPS was to small to fit into the new throttle body, so i had to put the BBK back in until i find the right size TPS but i've looked all over and cant find anything. Is this suppose to be a direct fit and if so why doesn't mine fit??


          Year: 2004 Submodel: Mach 1

          Helpful (19)

        • 3/5

          Installation Time: Less than 1 Hour

          April 20, 2016

          Beautiful but disappointing!

          I have lusted for an Accufab for quite a while! My BBK twin 62mm is fine but has the stiff throttle they are known for. That really makes it hard to get reaction times! So I sprung for the Accufab, excited when it arrived, opened and whoa, it had scratches in both throttle bores! Some deep! AM was great, sent an RMA and shipped another asap! No 2 arrived, it had the same scratches, just not deep into metal! AM was great but I expected better QC from Accufab!


          Year: 2003 Submodel: Mach 1

          Helpful (8)

        • 5/5

          Installation Time: Less than 1 Hour

          February 09, 2016

          Looks great, better throttle response

          Awesome looking throttle body and great fit. Way better than bbk. Easy install, great throttle response, but the only complaint is price.


          Year: 2003 Submodel: Mach 1 chicago,il

          Helpful (6)

        • 5/5

          Installation Time: Less than 1 Hour

          May 31, 2015

          Was worth it!

          Install was quick and painless! Set this up with a CAI and a tune, now my car is a totally different animal! Definitely noticed power gains and even like being able to hear the engine breath.


          Year: 1999 Submodel: Cobra Plymouth, MN

          Helpful (8)

        • 4/5

          Installation Time: Less than 1 Hour

          October 30, 2014

          accu fab throttle body

          The throttle body is fine the only problem i have with it is the throttle is getting stuck. You have to hit the accelerator several times to get it to go back to an idle.


          Year: 2003 Submodel: Mach 1 ms

          Helpful (7)

        • 3/5

          Installation Time: Less than 1 Hour

          February 12, 2014

          revved up idle

          After installing the throttle body the rpm's will jump up to 3,000-3,500 rpm's without touching the accelerator. I have to hit the gas pedal to knock the rpm's back down. Everything checks out on the computer. Was able to try a new TPS and idle air control valve with no luck. Hate to eat $350 bucks. Anybody have any suggestions?


          Year: 2003 Submodel: Mach 1 Chesapeake, VA, USA

          Helpful (25)

        • 3/5

          Installation Time: Less than 1 Hour

          September 01, 2013

          Brace Yourself

          Great product! I love it! BUT... WARNING!!! Hope you don't mind spend the time and money buying and trying IAC restriction plates to get your idle fixed. Open the throttle 1/16 of full and my rpms would shoot to 3k and hang there for quite some time, then almost stall out and eventually settle down to a little over 1k. Needless to say the check engine light came on. (engine idle speed higher than expected) id the code description. Even after a new flash tune and a IAC a regulator it still idles around 1-1.1k and hangs for a bit around 1.3k after cracking the throttle open.


          Year: 2004 Submodel: Mach 1 Kailua, Hawaii

          Helpful (7)

          • Response from AmericanMuscle

            It sounds like you may have a defective TB unit. I would suggest contacting Accufab directly to further discuss what is happening with your Mustang and they should be able to help resolve the issue. They prefer to handle their warranty claims directly and can be reached at (909) 930-1751.

            Lisa, Customer Care

        • 5/5

          Installation Time: Less than 1 Hour

          December 11, 2012

          Product fits perfect

          Great product, great looks great fit. Noticeable power gain. Took roughly 3/4 of an hour to bolt on


          Year: 2003 Submodel: Mach 1 Cambridge ont Canada

          Helpful (7)

        • 4/5

          Installation Time: Afternoon

          June 10, 2012

          2004 Mach 1 Procharger P1SC @ 8lbs

          Was having surging/hanging isle issues and finally after a weeks of messing around I came to the conclusion that there was a leak in my stock throttle body. It took a few hours to set everything up. They tell you not to mess with any screws on the throttle body as they are already adjusted but the idle set screw wasn't even close for me. After adjusting the idle set screw, the TPS voltage, resetting the ECU then letting it learn the idle over again for about 10 minutes my car now runs much better. No more surging/hanging idle problems. The throttle feels stiffer and response is better but I didn't feel any difference in performance. No whistling from the throttle body that I could hear over my P1SC.


          Year: 2004 Submodel: Mach 1 IL

          Helpful (7)

        • 5/5

          Installation Time: Afternoon

          January 07, 2012


          This thing is so good. after getting this upgrade my car feels like a beast along with the sct tune this thing is a sleeper. cant wait to smoke another AMG!


          Year: 1999 Submodel: Cobra

          Helpful (8)

        • 5/5

          June 15, 2011

          accufab 62mm throttle body

          I purchased the Accufab 62mm throttle body for my 03 mercury marauder. Easy install, precise fit and improved throttle response (even p/u a few horses). Product shipped swifty within 3 days and was very impressed with the finish and quality of the product.

          Robert W. McMahon

          Year: 2003 Submodel: Other

          Helpful (6)

        • 4/5

          April 10, 2011

          accufab TB

          As stated by most, easy to install and looks great over stock TB. I'm also experiencing a 'whistle' like sound when getting on and off the throttle. Quiet at idle (even when cold) and cruise speeds. Much improved throttle response over stock TB. two times on my 45 minute 'test' run after installing the throttle 'hung' around 2,000-2,500 rpm while sitting at light w/clutch in. Quick blip of the throttle brought it back down. I'm hoping the 'stick' and 'whistle' go away after a few more miles of driving. If not, I'll contact Accufab.

          Scot Campbell

          Year: 2003 Submodel: Mach 1

          Helpful (8)

        • 5/5

          September 20, 2010

          AccuFabulous ?

          The product looks great and is an easy install. I like how it comes with better screws for MAF. One thing is on Mach 1`s there needs to be a set of washers or a small plug to clost the gap between the bracket for shaker and TB.. the blot tightens to the bracket but because of the gap still bewtween the bracket and throttle body the bolt wont tighten the top left corner of the TB.. Please look for this on your Mach it is probably why its whistling!

          ED W.

          Helpful (16)

        • 5/5

          May 16, 2010

          accufab tb

          good quality product very nice

          jordan crosier

          Helpful (5)

        • 5/5

          April 26, 2010

          accufab throttle body

          real easy install and made a big differance in my supercharged mach1. its a must have for cobra and mach1 owners.

          alex lopez

          Helpful (8)

        • 5/5

          March 12, 2010

          throttle body :-)

          great product..... easy installation. also great throttle response from the start of your engine. i am totally satisfied with this product!


          Helpful (8)

        • 5/5

          February 21, 2010

          Easy Install

          I put this TB on the same day as the C&L CAI to save some time. Whole process took 20 minutes, and well worth my time. Quick and Easy bolt-ons for brutally stock Cobras.


          Helpful (7)

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