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Accufab Upper Intake Plenum (96-04 GT)

20 Reviews
Our Price

$229.99

  • Item #15002
  • MPN #4.6PLENUM
  • Market Price $239.99
  • You Save 4% ($10.00)
In Stock Ships same business day.
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Customer Photos
Features
  • Increases of 10 RWHP and 15 RWTQ
  • Improves airflow for more power
  • Perfect For Larger Throttle Bodies
  • Durable aluminum construction
  • Fits 1996-2004 4.6L GT Mustangs
Description
Better Air Flow for More Power. This Accufab Upper Intake Plenum increases the stock airflow from 460 CFM to an impressive 620 CFM to produce a dyno proven 10 more horsepower and 15 FT/Lbs of torque on a stock factory Mustang, making this Intake Plenum the perfect mod for any 4.6L GT Mustang. A Must For Larger Throttle Bodies. Installing a larger aftermarket throttle body on the stock factory intake plenum still restricts incoming airflow, but now you get the most out of your Mustangs bigger throttle body by installing a Accufab intake plenum for improved air flow.

Premium Quality. Accufab's intake plenum is precision CNC machined from high quality cast aluminum and is polished to a brilliant, mirror-quality finish. This Accufab Upper Intake Plenum is built to last.

Application. The Accufab Upper Intake Plenum is a direct bolt-on replacement for all 1996 to 2004 4.6L 2V GT Mustangs using a Stock, 70mm, or 75mm Throttle Body.

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

What's in the Box
Hardware included:
  • Throttle Body Gasket
  • IAC Gasket
  • EGR Gasket
  • Plenum Tubes
  • TPS mounting screws
  • IAC mounting screws
Installation Info

Installation Time: (approx) 2 Hours

Difficulty Level:Advanced mechanical skills required.

Fitment
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Does not fit 2001 Bullitt

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
5/5
Great!

I bought this Monday and it came Wednesday morning. I installed this plus a 70mm professional throttle body in less than 45 minutes easily, and I can significantly feel the power gain! Go with it!

Helpful (12) (1)

5/5
Accufab Plenum

Looks awesome all chrome. more throttle response with putting this on along with a spacer. would reccomend going with a 75 mm throttle body as well

Helpful (8) (0)

Customer Photos (20) View All

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Q & A (3 Questions, 6 Answers) Ask a Question

Which throttle Body? Which throttle body would be the best choice to use with this plenum?

Darknight Year: 2004 Model: GT

Question Resolved
Good Question (1) (0)
  • A 70 MM TB WOULD GO GOOD WITH THE ACCUFAB PLENUM. I HAVE THIS SET WITH A CAI AND CATTED X-PIPE, SCT FLASH TUNER AND AND FLOWS ON MY 98 GT. IF YOU HAVE A TURBO OR SUPERCHAGER THEN MAYBE A 75 OR 80 MM WOULD BE A BETTER CHOICE.

    Helpful (0) (1)

    1JUSTRHTGT Year: 1998 Model: GT

Show 3 more answers

accufab intake plenun w/stock throttle body? Is it possible to install the stock throttle body w/the a ccufab upper intake plenum

stang956 Year: 2002 Model: GT

Good Question (0) (0)
  • YES

    Helpful (0) (0)

    65cobra Year: 2002 Model: GT

Answer This Question

are the overall dimentions larger than stock I am running a shaker hood scoop my concern is the height of the plenum verses the stock one I don't have room if the aftermarket performance ones are taller how can I get dimentions so I don't order one that is to tall. thanks sputz

sputz Year: 1999 Model: GT

Good Question (0) (0)
  • just a bit taller it's a quick swap

    Helpful (0) (0)

    65cobra Year: 2002 Model: GT

Answer This Question

Reviews (20) Write a Review

  • 5 Stars .95 95%
  • 4 Stars 0 0%
  • 3 Stars 0 0%
  • 2 Stars .05 5%
  • 1 Stars 0 0%
4.8

out of 5 stars

19 Customers Recommend this Product

Installation Time:Afternoon

Installation Cost:$100-$250

  • Performance Gain: 4.444445 4.4/5
  • Fit: 5 5/5
  • Bang For Your Buck: 4.333333 4.3/5
Filter By Sort By
  • 5/5

    Great!

    November 12, 2008

    I bought this Monday and it came Wednesday morning. I installed this plus a 70mm professional throttle body in less than 45 minutes easily, and I can significantly feel the power gain! Go with it!

    jeff

    Helpful (12) (1)

  • 5/5

    Accufab Plenum

    March 30, 2010

    Looks awesome all chrome. more throttle response with putting this on along with a spacer. would reccomend going with a 75 mm throttle body as well

    Drew

    Helpful (8) (0)

  • 5/5

    It\'s worth it!

    March 16, 2009

    Added this Plenum with a 75mm tb and cai, among other items and could definately tell a huge difference compared to stock. Well worth it and looks sharp under the hood as well.

    Justin Bradford

    Helpful (7) (1)

  • 5/5

    Looks Great! Worth The money!

    February 06, 2011

    Revived this item with the Stack Racing TB and Spacer. Not bad to install biggest problem was getting the screws off the old Plenum.Overall Great product. Looks great and I felt a HUGE Difference. Thanks AM

    Griffin

    Driving Style: Daily Driver

    Helpful (4) (0)

  • 5/5

    THIS PRODUCT IS A MUST FOR THE 4.6 2V

    December 05, 2012

    I JUST RECEIVED AND INSTALLED THE ACCUFAB UPPER INTAKE PLENUM. I HAD ALREADY PUCHASED THE 70 MM THROTTLE BODY. THESE TWO PARTS FIT PERFECTLY AND IT ONLY TOOK A LITTLE OVER AN HOUR TO INSTALL. I DID NOTICE DECENT POWER GAINS AT ALL RPM'S. THE ACCUFAB THROTTLE BODY AND PLENUM ARE A MUST FOR YOUR 4.6 2V. THANK YOU AGAIN AMERICAN MUSCLE FOR GREAT SERVICE.

    1JUSTRHTGT

    Year: 1998 Model: GT Driving Style: Show 'Stangs I have owned: 2 Monrovia, CA, USA

    Helpful (2) (0)

  • 5/5

    Excellent Item !!!!!!!!!!!

    November 19, 2012

    Install one afternoon then on the next day had it Dyno ant PRO DYNO and the horsepower was 254 and torque was 300 Excellent !!!!!!!!!

    Axhandler2002

    Year: 1999 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Mayberry NC

    Helpful (1) (0)

  • 5/5

    Great Plenum

    February 15, 2011

    I purchased this plenum and 75mm TB a few years ago and I haven't looked back yet. Throttle lag disappeared, throttle response increased and the look that it has always get compliments at shows. I would buy it again if I had to, but this thing is solid. This is a one time purchase. It'll be on my car forever.

    Shawn O'Neill

    Driving Style: Street / Strip

    Helpful (2) (1)

  • 5/5

    Accufab Plenum 4.6L

    October 14, 2010

    I liked it gave more air flow, easy to instll jus basic tool, looks good under the hood u can actually feel and hear the power.

    Denis Estrada

    Driving Style: Daily Driver

    Helpful (1) (0)

  • 5/5

    Accufab plenum

    October 14, 2010

    very satisfied with this product.paired with the 70 mm throttle body i definately noticed a differnece instantly.installation was very simple and i never work on cars

    corey l

    Driving Style: Show

    Helpful (1) (0)

  • 5/5

    Better than stock

    July 04, 2014

    I could tell a difference as soon as I went on a test drive

    Camerokiller04

    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Southboston va

    Helpful (0) (0)

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