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Accufab 90mm Race Throttle Body w/ Spacer (86-93 5.0L)

AmericanMuscle no longer carries the Accufab 90mm Race Throttle Body w/ Spacer (86-93 5.0L). Please check out 1979-1993 Foxbody Mustang Throttle Bodies for an updated selection.

Features & Details

  • Fits 86-93 5.0L Mustangs
  • 90mm Diameter at Blade
  • 4" Inlet Diameter
  • CNC Cut Solid Billet Aluminum Construction
  • Highly Polished Finish
  • Includes 2" Blank Spacer & Gasket
  • Improved Throttle Response
Maximum Flow. This race-ready 90mm throttle body delivers maximum flow to your monster 5.0L Mustang. With its CNC machined billet aluminum construction and split-shaft design, this top of the line 90mm throttle body kit from Accufab delivers maximum performance and reliability to put you ahead of the pack. Included is a 2" blank solid aluminum spacer with no water passages or tubes, which provides options for mounting your stock cable bracket.

Exceptional Quality. Accufab's 90mm race throttle body is made to the highest standards. Manufactured using CNC machining, this piece is made from billet aluminum combined with a stainless steel split shaft to ensure this throttle body will hold up under intense pressures.

Forced Induction and Built Motors. This track ready throttle body will support your built or forced induction 5.0 engine. Note that a dyno tune will be required after installation of this throttle body due to the amount of sheer amount of air provided to your engine.

Feel the Power. An aggressively sized 90mm race throttle body will deliver the air your heavily modified engine needs to maximize both existing and future modifications. With this kit, you'll bolt on more ponies in minutes and increase your throttle response for a quicker jump off the line and out of the corners. For the Mustang enthusiast who is building a track or drag monster and doesn't want to compromise on performance, this throttle body is a necessary addition to your arsenal.

  • 90mm throttle body
  • 2" blank spacer
  • Stainless steel split-shaft design
  • CNC Polished billet aluminum construction

Tech Notes:

  • For forced induction or built engines only.
  • For track use only.
  • Pre-calibrated at Accufab, please do not adjust screws on the throttle body.
  • Requires use of 4" tubing and hose clamps.
  • Requires dyno tune.

NOTE: If you are looking for a street-legal option, or for less modified Mustang, consider Accufab's 70mm or 75mm kit with EGR spacer.

Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details


CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Throttle Body
  • (1) Spacer
  • (1) Gasket
Installation Info
Tech Specs
Throttle Body Specifications
Bore Size: 90mm Single or Twin Blade: Single
Year: 1986-1993 Model: 5.0L
Material: Aluminum Finish: Polished Aluminum
Manufacturer: Accufab Computer Tune Required: Yes

Will it fit my Mustang?

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      Questions & Answers (5)

      5 Top Rated Questions

      Will this fit a 2002 mustang gt 4.6l that already has an edlebrock intake elbow ? The intake elbow says it is for a 90mm throttle body and the only one I have seen is this one .. I've seen photos of a mustang 4.6l with the edlebrock intake elbow and this throttle body together . My question is will it work for stalk cables and wiring ??

      • The Accufab 90mm Race Throttle Body will work with the Edelbrock intake and elbow for the 4.6L 2V GT. The throttle cable will work, but you will need to use the 5.0L TPS sensor.

      Helpful (0)

      Does this throttle body fit 2001 mustang gt if not is there is any adapter. Cause i have drag racing mustang gt 2001 supercharged novi 2000 18psi 80lb injectors i couldn't find 90mm throttle body yet!

      • Unfortunately this Accufab 90mm Race Throttle Body w/ Spacer will only work on 86'-93' 5.0L Mustangs. This will not work with a 2001 Mustang.

      Helpful (0)

      Will this work with a vortec supercharger

      • Hey Fluffy, In terms of performance, yes this throttle body will work will a vortech s/c. All you need to do is make sure that you get the right coupler size for the piping to attach to the throttle body because the throttle body flares out almost like a bell and that's where a lot of the mis-fitment occurs.

      Helpful (0)

      Does this have a provision for iac motor?

      • Yes, this Accufab 90mm Race Throttle Body does have provisions for an IAC motor.

      Helpful (0)

      Does this have the provision, for the IAC? And will pcm throw a code or affect the engine performance for the egr not being in place any more?

      • The Accufab 90mm Race Throttle Body w/ Spacer is designed for purpose built race cars. It is not designed to be a bolt on for a car that is driven on the street. If bolted onto a stock 5.0 motor this will cause your PCM to throw codes and affect your idle.

      Helpful (0)
      Post Your Question

        Customer Reviews (14) Write a Review

        Overall Rating 4.6

        out of 5 stars

        Installation Time:Less than 1 Hour

        • Performance Gain 4.545455 4.5
        • Fit 4.818182 4.8

        • 5/5

          Installation Time: Less than 1 Hour

          March 19, 2019

          90mm TB

          Shipped fast and was in excellent condition. Easy install


          Year: 1993 Submodel: LX

          Helpful (0)

        • 3/5

          Installation Time: Less than 1 Hour

          July 31, 2018


          Quality of the product is not an issue, show quality finish out of the box. Just disappointed that for what you have to pay for it that it doesn't come with new hardware to install it.


          Year: 1993 Submodel: GT

          Helpful (7)

        • 2/5

          Installation Time: Less than 1 Hour

          February 07, 2018


          Price is ridiculous for a butterfly valve that just opens an closes didn’t even come with hardware on top of that!


          Year: 1993 Submodel: LX

          Helpful (8)

        • 5/5

          Installation Time: Afternoon

          August 31, 2017

          Accufab 90mm TB

          I went from 75mm to this 90mm and what a difference...i have a 347 stroker with 150 shot wet nitrous and what a improved my 1/4 mile time. Thanks AM!!!


          Year: 1991 Submodel: LX

          Helpful (10)

        • 5/5

          Installation Time: Less than 1 Hour

          June 10, 2016

          90mm TB

          My car broke down so I decided to go big on the rebuild, I love this TB the polish on it looks amazing and it's just the right size for the edelbrock elbow I bought to go with my jr Victor intake. I have just completed the build so I haven't driven it yet. Next year I'm planning on low boost via turbo.


          Year: 2003 Submodel: Other

          Helpful (11)

        • 5/5

          Installation Time: Less than 1 Hour

          October 21, 2014

          Go big or go home!

          Excellent quality, Fit and finish is perfect, Best throttle body I've used, Highly recommend.


          Year: 1989 Submodel: GT Salem, OR, USA

          Helpful (10)

        • 5/5

          Installation Time: Less than 1 Hour

          May 28, 2014

          Accufab 90mm Throttle Body

          Great Product At A Great Price, its huge 4" inlet and it narrows down to 90mm (3.5") at the blade , simply best of the best.... make sure you have enough engine for this baby ...


          Year: 1988 Submodel: GT Middle Village, Queens, NY, USA

          Helpful (10)

        • 5/5

          Installation Time: Less than 1 Hour

          February 23, 2014

          Accufab 90mm throttle body

          This product was exactly wht I needed for my Turbo fox body fits and works great def recommend for boosted cars plus fast shipping


          Year: 1989 Submodel: GT Denver, CO, USA

          Helpful (12)

        • 5/5

          Installation Time: Afternoon

          July 24, 2013

          Well built, excellent performance, great looking throttle body.

          My first reaction opening the box was a stunned "whoa". Pictures don't do the polish job on these throttle bodies justice. It is literally a mirror finish. Along with that, the throttle body is very robust and well built, and installs perfectly. Install time for any throttle body on these cars is a quick ordeal, but I had a few extra things to do, like find a new routing for the vent line off the valve cover, since this particular throttle body does not have provisions for one. Because of that, I rated it as an afternoon project, rather than "less than 1 hour", like most throttle bodies would be. Other goofy things to keep in mind is that, because the bore is so big, the idle air control motor mounting screws will have to be shortened, so they don't protrude into the air path. I also gave "bang for your buck" a 4 instead of a 5, simply because it does not come with a throttle position sensor. Ignoring that, it's tough to beat the price American Muscle sells these for. Most people are already going to have a TPS, anyway. Finally, performance gain is going to be based on what your current combo is, and what parts are acting as bottlenecks. Obviously, a stock 5.0 with the anemic stock intake isn't going to benefit from a 90mm throttle body. However, my current intake is designed for a 90mm throttle body and my ultimate build goals make a 90mm unit a good idea. Because of that, I gave it a 5 star, but individual results may vary.


          Year: 1986 Submodel: GT Indianapolis, IN, USA

          Helpful (11)

        • 5/5

          Installation Time: Less than 1 Hour

          December 24, 2012

          great throttle body

          I think accufab makes some of the best throttle bodys.


          Year: 1988 Submodel: Other Topeka KS

          Helpful (10)

        • 5/5

          Installation Time: Less than 1 Hour

          February 07, 2012

          Accufab 90mm TB

          The name speaks for itself. You are not going to find a better quality, nicer looking throttle body than accufab. Only thing that could make it better is if it came with the tps sensor.


          Year: 1986 Submodel: GT

          Helpful (10)

        • 5/5

          March 04, 2011


          Skill level 1, car show beauty,I have a 76mm Turbo and they are a match in heaven! Love it! AAAA+++++++

          Gilbert Otero

          Year: 1989 Submodel: GT

          Helpful (10)

        • 5/5

          April 27, 2010

          Great Value

          Perfect for my F2 procharger set-up.. Great price and it even included the 2 spacer that i needed.

          Ken Greenwood

          Helpful (13)

        • 5/5

          February 11, 2010

          Accufab is the Best!

          Switch from the Accufab 75MM Race TB to the 90MM Race TB and picked up 7 RWHP and 4 RWTQ... My little 347 now puts down 406 RWHP and 386 RWTQ on 91 octane at the pump... Thanks Accufab!!!


          Helpful (16)

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