$7,000 Summertime Mustang Build Enter Now!
Talk to a Mustang Expert
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

SR Performance Upper Intake Plenum (96-04 GT)

Market Price $149.99 You Save 10% ($15.00)
Our Price


FREE Shipping
  • Item 41120
  • MPN# 41120

In Stock Ships same business day. Choose options to add to cart

Features, Video & Details

  • Improves Airflow for More Power
  • Perfect for Larger Throttle Bodies
  • Durable Aluminum Construction
  • Fits 1996-2004 4.6L GT Mustangs

Review & Installation Video

Review & Install Video

Hey, I'm Justin with AmericanMuscle.com, and this is our powerpack Bolt-On Build-Up for all 94-98 Mustang GTs. Now before we get started, we're well aware of the fact that the 94-95 GTs came equipped with the 5.0 motor before eventually being replaced by the modular 4-6 in 1996. So, with that said, all the parts used here on our '98 today, will not apply to those earlier years, but the idea remains the same, to increase the power. So that's why we put together a pack of parts that should help our GT breathe a lot easier, in turn making for some more horsepower and torque, all while making for one mean exhaust note. Now, before we get started on our car, we need to grab a quick baseline number, and then hand that over to the crew to get everything installed.

Improves Performance. Increase the airflow into your Mustang's two valve 4.6L V8 engine to improve horsepower, torque, and overall performance with a Mustang Upper Intake Plenum.

A Must For Larger Throttle Bodies. Installing a larger throttle body on the factory intake plenum still restricts incoming airflow, but now you get the most out of your Mustangs bigger throttle body by installing an upper intake plenum for improved air flow.

Precision Crafted. This Intake Plenum is made from a permanent mold casting of 356 aluminum to produce a higher quality casting than conventional sand molds, which reduces porosity for an improved finish.

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

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

What's in the Box
Hardware included:
  • (2) Two Gaskets
  • (2) Two Screws
  • (1) One Large connector
  • (1) One Small connector
Installation Info
Tech Specs
Will it fit my Mustang?
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Does not fit 2001 Bullitt

People Who Bought This Item Also Bought

Most Helpful Reviews

My Sr performance plenum

The Sr performance plenum is wonder full definitely I can feel the diffrence right away after I installed it better throttle response goes well with my typhoon manifold and BBK intake looks really good ...

Read More
Helpful (1)

More ponys

Great product cant wait to tune it up Works just perfect with the 70 mm throttle Body

Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 73 Reviews

Customer Photos (27) Submit Your Photo

View All 27 Photos

You Might Also Like

17 Questions / 8 Answers

Ask a Question

which throttle body which throttle body would be better? the SR Performance 70mm or 75mm throttle body?


  • If you plan on going forced induction then go 75mm but if not go 70mm. Too much air can cause power loss.


Show 1 more answer Helpful (5)

do i need to get the spacer? and what is the stock tb in musatng?2002gt justt wandering with oll that reading got a little confuse.....thanks in advance any advise will be apreciated.


  • No you don't need the spacer. I believe the stock tb is 56 mm.


Show 1 more answer Helpful (3)

The Pypes Violator Cat-Back Exhaust the SR Performance Upper Intake Plenum and the bbk cold air intake does it fit on my 1997 gt mustang convertible and do you ship parts in canada Quebec. I love your video, I want to buy so many parts !!!


  • The SR Performance Upper Intake Plenum will fit your 1997 GT and yes we do ship to Canada!

    Pat K

Helpful (1)

Hi i have a 2000 merc grand marquis, will this fit ?


  • Unfortunately, we would not be able to confirm fitment of this part on a Mercury Grand Marquis; We can only guarantee fitment on Mustangs, we apologize.


Helpful (0)

Hi. I have just bought a 1996 GT convertible and I wonder if I would need both the 70 mm throttle body and the upper intake plenum to get the best "bang for the money" or is just the 70 mm throttle good enough?? Is there a signifant difference?? // C-G


  • The SR Performance Upper Intake Plenum would help to gain an additional 5-10hp on top of the SR performance throttlebody, as well as further increasing throttle response. It is not strictly necessary, as this was on top of the horsepower and throttle response gains of the throttle body itself. Maximum power gains would come from the throttle body and plenum together.

    Rob D

Helpful (0)

How can you modify or add letters/numbers on after purchase? I would like 4.6 as I seen in the customers pictures!!


  • Unfortunately, the SR Performance Upper Intake Plenum comes blank, however, you can add emblems on the top to add a unique touch. The customer submitted photo contains the plenum with the Red 4.6 High Performance Emblem (item 389619) on top.


Helpful (0)

More Products You Might Like

Customer Reviews (73) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Less than 1 Hour

Installation Cost:$100-$250

  • Performance Gain 4.222222 4.2
  • Fit 4.666667 4.7

  • 2/5

    November 29, 2016

    Needs some work

    I just purchased this, and I'm not impressed out of the box. The throttle body looks great, but not so much the plenum. The inside is rather rough and not all smooth and polished like it should. It's definitely gonna need a little bit if sanding to at least make sure it's smooth and even where the plenum meets the intake manifold. The quality looks good on the outside, but just not impressed with the machining.


    Year: 2004 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    June 19, 2016

    My Sr performance plenum

    The Sr performance plenum is wonder full definitely I can feel the diffrence right away after I installed it better throttle response goes well with my typhoon manifold and BBK intake looks really good under the hood as well great product I recommend it to anyone who wants the nice look an better response in throttle an power


    Year: 2000 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    April 29, 2016

    More ponys

    Great product cant wait to tune it up Works just perfect with the 70 mm throttle Body


    Year: 2004 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    August 15, 2014

    tHE BEST!

    FIVE STARS!!! ALL THE WAY.. NICE addition. good job! AMERICAN MUSCLE!!


    Year: 2002 Submodel: GT San Diego, CA, USA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    April 04, 2014

    full SR performance intake

    I install the SR Performance intake spacer, plenum and 70mm throttle body and all I could say is WOW! blew away all of my expectations! The install of the parts wasn't that bad, just hoses and bolts. When I took the car for a spin it was a hole new car! It seriously felt like my power doubled. You can hear and feel the car getting more air, and it gives you back a lot more power and a lot more throttle responsiveness. The car is like a whole new animal! 110% satisfied!


    Year: 2000 Submodel: GT PA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    February 16, 2014

    Bang for your buck.

    Excellent part, it looks great, bolts right in, and the performance gains are very noticeable. I'm running this with a K&N FIPK CAI, SR 70mm TB, and a SR Plenum Spacer. However, I ran this part with the stock Throttle Body, and even then the gains were noticeable without a tune. The only down side is that it takes a while to get used to the extra idle air when shifting, but that just takes a few hours of driving.


    Year: 2004 Submodel: GT Oceanside, CA, USA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    April 07, 2012

    Looks amazing

    My friend and I installed Cold Air Intake (96-04 GT), SR Performance 70mm Throttle Body (96-04 GT), SR Performance Upper Intake Plenum (96-04 GT), and SCT SF3/X3 Power Flash Tuner w/ 3 Free Custom Tunes (96-98 GT) last night. It looks so good under the hood, along with the other parts mentioned. Sounds very nice when I open up the throttle.


    Year: 1996 Submodel: GT Rockingham, NC, USA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 28, 2012

    Great Plenum

    This product is awsome. Bolted right on coupled with a intake spacer and 70mm trottle body. My exhaust is a little more aggressive. Looks great. Good bang for the buck. Would recommend to any one. Thanks again AM.


    Year: 1997 Submodel: GT

    Helpful (1)

  • 5/5

    January 26, 2012

    Plenum happiness!

    Great product! Really noticed an improvement in throttle response and horsepower! Definitely recommend this product!


    Year: 2001 Submodel: GT St. Louis, MO

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    December 21, 2011

    Looks good

    Its a good bang for the buck. Looks good an a noticeable amount in throttle response.


    Year: 1997 Submodel: GT VillaRica GA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    September 13, 2011

    Easy Horsepower

    I Have a 2003 Gt 5 speed and right now it has an off road x pipe with flowmaster 40s , BBk CAI , FRP 4:11 ring and pinion, SCT livewire flashtuner, BBK 75 mm throttle body. My car was moving pretty good for what little things i had done to it. Ordering the Stack Racing plenum and spacer was well worth it. The inside of the plenum was rough when it came in (took six days and im in alberta, canada) i have a small buffing tool which i took an extra hour to polish out the inside of the plenum smoothed it out and installed it in less than 20 min. I felt a difference right away my car breaths better is almost whistles when i get on it. Definately improved mid range power and brought my revs around alot quicker. The car also sounds different in a good way. definately a must buy product for all mustang owners.


    Year: 2003 Submodel: GT Fort Mcmurray , Alberta

    Helpful (1)

  • 5/5

    March 27, 2011

    Great Product

    Easy to install. You have to hammer in some of the fittings but it's not hard. There was some casting flash on the inside which was easily removed. Looks great and runs great.


    Year: 2003 Submodel: GT

    Helpful (1)

  • 5/5

    May 14, 2010

    I love it!

    I bought it on Tuesday, got it friday. It was in perfect condition, they give you two adapters to choose from and two screws for the IAC valve. It fit perfectly, and It made a noticable difference in my exhaust (O/R Mac Mid, AT Flowmasters).

    Justin D.

    Helpful (10)

  • 4/5

    June 28, 2010


    For the price you get a good product that looks very sharp under the hood, also gives you some power and throttle responce, I would reccomend this.


    Helpful (9)

  • 5/5

    May 15, 2010

    Nice bang for the buck!

    I bought this product along with Stack Racings 70mm throttle body.Simple bolt on.These polished pieces look great under the hood. Great throttle response, and nice top end gains! Thanks AM.

    D. Heggins

    Helpful (12)

  • 4/5

    April 17, 2010

    Good balance price/performance

    Bought this and strapped it on, no problems like some of the installation issues I read on reviews of other plenums. Nicer throttle response.

    Mike H.

    Helpful (6)

  • 5/5

    Installation Time: Afternoon

    March 10, 2013


    the product is great, but looks plain.on top. the inside looks like it was home made. I put a 4.6 high performance label on top.


    Year: 2004 Submodel: GT Blaine, WA

    Helpful (5)

  • 5/5

    August 15, 2010


    All you folks looking thru this site, you won't find a better place for your mustang needs, great prices and even greater service. I put this Stack racing plenum on my mustang with a half inch spacer(also purchased from AM) and you would not believe the difference it made. The torque and hp gain was unbelievable. Thanks AM you've done it again !!!!


    Helpful (4)

  • 5/5

    September 23, 2010




    Helpful (3)

  • 4/5

    July 20, 2010

    Good for the money!

    Fitment was great except for the rear vacuum nipple which required a larger hose. Rpms seem to hang slightly longer than stock, but only around 1100 rpms then down to normal. This aids in rev matching and overall in town driving with a manual! Worth your while! Thanks AM!

    Tom H.

    Helpful (4)

Related Mustang Categories