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Ford Performance Performance Improvement Intake Manifold (96-04 GT w/ PI Heads)

Market Price $300.99 You Save 12% ($36.02)
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  • Item 24010
  • MPN# M-9424-P46

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    Features, Video & Details

    • Great for PI Head Swap
    • Black Finish
    • Composite Plastic Construction
    • Aluminum Crossover
    • Requires New Factory Style Manifold to Head Gasket & Thermostat Gasket
    • Fits 1996-2004 GT Mustang with Performance Improvement (PI) Heads

    Review & Installation Video

    Review & Install Video

    Hey, everybody. I'm Justin with and this is my detailed review of the Ford Racing Performance Improvement Intake Manifold available for all '96 to '04 Mustang GTs equipped with PI heads. You should be checking out the Ford Racing Performance Intake Manifold if you've already swapped or plan on swapping over to the very popular PI or performance improvement heads with your two-valve GT, and therefore need a very affordable performance intake manifold solution. This would also be a great option out there for all 2001 to 2004 GTs who may be suffering from a damaged factory intake manifold and are looking for an exact reproduction of that manifold. A lot of you SN guys probably already know, but making the switch over to a set of PI heads is a very popular and very affordable way to get some more performance out of your two-valve GT. The best part is, guys, you can find these PI heads everywhere and for super cheap because Ford use them on a lot of stuff, including the F150, the Explorer, the Crown Vic, and of course, the Mustang. Those PI heads were introduced back in 1999 and were immediately a huge improvement over the non-PI heads in many different aspects. The heads float a lot better than the factory non-PI heads, they had a much hotter cam, and the combustion chamber was actually reshaped slightly, raising the compression ratio in the process. Altogether, this all resulted in a pretty substantial bump in power. How much power exactly? Well, non-PI head equipped two-valve GTs are putting down and advertise 210 horsepower. With the PI heads, the car was now making 260 horsepower. So again, a big jump in power. The totally redesigned heads and that hotter cam, Ford had to totally redesign the intake manifold to keep up with that better flowing top end and that's the intake manifold we're looking at here today. Again, guys, this is the same exact manifold used on all 2001 to 2004 4.6-liter Mustang GTs making it a Direct Bolt-On as you might expect. This pretty much is still a Direct Bolt-On from 1999 and 2000 GTs. However, you will need one additional part, basically an alternator bracket, but that's about it. I do want to point out guys that you can actually use this intake manifold on non-PI Heads and still get a nice gain in power, although some additional work is necessary. It's really not as bad as you might think. You just need a set of the PI gaskets to go in between the manifold and the heads and you will need to get some gasket maker to go around one of the mismatched water jacket areas. It might sound a little shady, but honestly it's not as bad as you think. In fact a lot of people do it with great results. Ford Racing Intake Manifold has been constructed from a black composite material and features an aluminum cross over here as you can see. It has an effective RPM or operating range from basically idle to about 6000 RPM. Now, there are better options out there for higher revving engines. So maybe if you are planning on building a nasty all motor set up using a big cam, you'll want to turn a higher RPM. You might want to check out the Victor Junior from Edelbrock as opposed to this intake manifold here. I do also want to point out that you can use aftermarket throttle bodies and aftermarket intake plenums with this intake manifold from Ford Racing. In fact, it's something many of our customers have done and they've reported great success in doing so. Feel free to read up on the 100-plus five star reviews on this product back on the product page. You just might get a little better idea of what to expect when installing. On the topic of price, guys, again, I think you'll find this to be one of your more affordable options when it comes to your two_valve GT or aftermarket intake manifold, especially when comparing to some of your other options here on this site, landing you right in the mid-$200 range. Now, your install is definitely going to differ here guys depending on your year, of course, and also depending if you plan on doing this intake manifold swap along with the head swap or if you're just going to do the intake manifold by itself. Regardless, before you get started with the install, make sure you get a fresh set of gasket from the intake manifold to the head and also don't forget a fresh thermostat gasket along with some fresh coolant. This one will definitely test your tool box a little bit. So just make sure you have a decent set on hand before getting started and also you're going to want to make sure you have something on hand to catch the coolant when you do make the swap. Now, if you're doing just the manifold by itself, I'm going to say two out of three wrenches on the difficulty meter, really not too bad here. But if you are doing this with the full head swap, it's going to raise it to a full three out of three wrench job. Overall, guys, just leave yourself a few hours in the garage guys or driveway to get the manifold in place. The Ford Racing Performance Improvement Intake Manifold is a great performing, budget friendly intake manifold for all SN owners out there with PI heads and even those without as we talked about a little bit earlier. So be sure to check out an option for your two valve-GT right here at

    Perfect for PI Head Swap. This is the same exact production Intake Manifold used by Ford on the 2001 to 2004 4.6L SOHC 2V V8 GT Mustangs. It is less expensive and a great alternative to high dollar aftermarket performance intake manifolds when performing a PI head swap on your Stang.

    Application. This Ford Racing Performance Improvement (PI) Intake Manifold is a direct fit on 1999-2004 4.6L GT Mustangs with PI head ports. It can also be used on 1996-1998 4.6L engines with PI heads, with additional parts and modifications required.

    Technical Note. 1999 and 2000 GT Mustangs will require the use of an alternator bracket from a 2001-2004 GT. All Mustangs will require a new factory style manifold to head gaskets, part numbers # YL3Z-9439-BA (Driver Side) & YL3Z-9439-A (Passenger Side) and a thermostat gasket.

    Mustang PI Intake Manifold Swap Overview

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

    What's in the Box
    • (1) PI Intake Manifold
    • (1) Pre-installed "Intake to Plenum" Gasket
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

    Mustang PI Intake Manifold Swap Overview

    Will require a new factory style manifold to head gasket and a thermostat gasket

    1996-1998 Mustang do not have PI Heads from the factory, will require PI heads for proper fitment

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    34 Questions / 11 Answers

    Ask a Question

    Does this part improve fuel economy as well as horsepower. My mustang is a 96 gt 4.6l. It has full exhaust, longtube heads. Upper intake plenum, throttle body, cold air intake. I'm just wondering if this would be a good add on or replacement


    • Increases air flow so yes there will be an improvement as far as better fuel economy not sure


    Show 4 more answers Helpful (20)

    Is this street legal and will it pass the smog check


    • The Ford Performance Performance Improvement Intake Manifold is the OEM 01-04 intake manifold, making this legal for emissions and smog testing.

      Rob D

    Helpful (3)

    What else is needed if I want to put this on a 98' GT with NPI stock heads? Is there a gasket kit or a new coolant line needed?


    • On a 98 GT you will need to do a full PI Swap. For that you will need the following: PI Intake Manifold PI Heads Heater/Coolant hoses from 1999-2004 GT Alternator Bracket from 2001-2004 Mustang Gasket Set for PI cylinder heads Intake gasket Thermostat gasket


    Helpful (2)

    Does the Ford Performance Performance Improvement Intake Manifold come with a warranty?


    • Unfortunately, the Ford Performance Performance Improvement Intake Manifold do not come with a warranty. For more information regarding Ford Performance's warranty, we recommend referring the their website directly at the link provided below:


    Helpful (1)

    What intake manifold gaskets and thermostats gasket would I need to order for this manifold? I don't see anything on this site.


    • This will only require a new factory style manifold to head gasket and thermostat gasket which can be found at any local parts store.


    Helpful (1)

    Will i see a power gain? Will i see a power gain over the stock intake manifold on my 2000 gt?


    • No, your 2000 GT manifold is the same as this one except it has a plastic coolant crossover if it is the original one. The plastic crossovers ALWAYS crack and if yours hasn't yet, you are on borrowed time.


    Show 1 more answer Helpful (1)

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    Customer Reviews (100+) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$250-$500

    • Performance Gain 3.847682 3.8
    • Fit 4.862745 4.9

    • 5/5

      December 14, 2009


      i broke the nipple on the back of my old manifold. ford wanted $2100 to fix way!!!!! so after getting the manifold and all the other parts, it was about $400.not bad!!! the Installation Instructions are a little off and left 1 or 2 things out. but i did it on my 2001 4.6 gt and it was e/z. the things that should be in the Instructions are...1 the hose running along the v of the block, get a 13mm Standard Locking Flex Ratcheting Combination Wrench. at Sears it was $17... the bolt is really in there ...2 the new water pump nipple. i had to put silicone around it. 3 when i put the alternator bracket back on the holes were off so i drilled a new 1 in the alternator great... just take your on it

      Drew ski

      Year: 2001 Submodel: GT

      Helpful (30)

    • 5/5

      May 24, 2010

      Perfect fit!!

      Quality service and quick delivery from American Muscle, you guys are GREAT! Intake went on without a hitch, had to modify existing alt bracket (piece of cake) took about 1 1/2 hours. American Muscle is and will always be my Mustang parts headquarters.

      Troy, Ohio

      Helpful (29)

    • 5/5

      July 20, 2011


      My intake manifold cracked and was spraying water all over the engine bay. I purchased this product and failed to read the note saying I would need to buy a new alternator bracket for an 01 - 04 Mustang GT. This was a bit frustrating until I found out that the replacement factory manifold would cost me $765.00. After buying this product, intake gaskets, throttle body gaskets (upper and lower), alternator bracket and bolts I spent exactly $270.00 and saved myself over $500.00. I am very pleased with the cost and the performance. This product works very well with the BBK Cold Air Intake Kit. The engine responds very quick and feels as if came alive. Installation was easy but somewhat time consuming. I spent probably a total of three hours on tear down and installation. Torque your bolts at 18 - 20 ft lbs. No Leaks!!!!

      Joseph Guglielmi

      Year: 2000 Submodel: GT

      Helpful (24)

    • 5/5

      May 14, 2010

      Amazing American Muscle

      American muscle for the win AGAIN. Not only is the part MUCH cheaper than at my local shops, but I actually got it MUCH faster than my local shops could even order it in! I was promised 5-7 business days and it showed up in 4, all the way from PA to ALBERTA CANADA. As usual, im very pleased with AM


      Helpful (18)

    • 5/5

      March 10, 2010

      Intake Manifold

      This manifold was exactly what I was looking for! The manifolds that are available in town are the Dorman brand and do not use the factory gaskets! This manifold has the aluminum cross over that does away with the distortion found in the plastic manifolds. Thanks American Muscle!

      Austin Park

      Helpful (16)

    • 5/5

      August 14, 2009

      Great item

      American muscle you guys are awesome i just installed my new intake manifold yesterday my car feels great its back to normal after i replaced my old one with the plastic thermostat housing that craked and leaked antifreeze


      Helpful (13)

    • 5/5

      July 16, 2009

      Blue Oval

      It was such a great feeling to receive a genuine Ford Motor (racing) Company 4.6L Performance Improvement (PI) Intake Manifold. This was the [exact] same product that official Ford car dealers were offering for hundreds $$ more. Thanks American Muscle for once again providing prompt and reliable products and service.


      Helpful (13)

    • 5/5

      June 27, 2010


      The PI intake manifold was shipped fast and was the correct part. best price anywhere! Fit nicely but had to modify my alt. bracket (2001 stang). American muscle has always been outstanding to buy from.

      Alex Rodgers

      Year: 2001

      Helpful (11)

    • 5/5

      January 07, 2011

      Ford Racing 4.6L Performance Improvement (PI) Intake Manifold

      I put this on my npi heads, feels so much better. Throttle response is quicker. more power. Also sounds deeper. But does require about $50 more in parts from autopart store to make it fit npi heads. Well worth it.


      Helpful (9)

    • 4/5

      October 18, 2010

      good quality

      This intake would be a great part over the more expensive brand out there for people that are doing PI head swap, other than that, this intake is identical to the 4.6 PI intake manifold that came from stock. same ford quality and finish. i replaced mine because it cracked near the thermostat and was leaking antifreeze like crazy. if you would like to avoid this problem, i would just recommend getting the typhoon intake, other than that, great product! it was cheaper than my local car parts store (about $20) and they said they had to special order it and would take 10-14 business days. AM had it at my door in 4 days (texas). not to mention, it is a FORD OEM product!


      Helpful (8)

    • 5/5

      May 16, 2010

      intake manifold

      installed on my 2000 GT should include the alternator bracket, other than that it performs just like the factory one, minus the coolant leak.

      Jason Lindgren

      Year: 2000 Submodel: GT

      Helpful (7)

    • 5/5

      December 03, 2009




      Helpful (7)

    • 5/5

      November 17, 2009

      Quality Fit and Performance

      Excellent Product! Delivered safely and on time. Build quality is top notch. Highly recommended for the NPI-PI swap as well as for those with 99-01's with the Plastic Coolant Crossover. Doing this project on my 99 woke up my car considerably! A+++! Definitely would buy again!


      Year: 1999

      Helpful (7)

    • 5/5

      August 12, 2011

      simply the best

      I installed this in my 98 gt. What a huge improvement in performance and exhaust note got raspier. I would suggest an after market throttle body and cool air intake to really take advantage of this product. Install was pretty easy and the step by step guide thats on was flawless. Side note the 98 gt has the correct nipple and rear heater hose.


      Year: 1998 Submodel: GT

      Helpful (6)

    • 5/5

      March 10, 2010

      PI Manifold

      Great product fit right the fisrt time and delivered the claimed performance!! Thanks American Muscle!!

      JC Fabela

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      January 08, 2018

      BE PREPARED TO BE AMAZED!!!!!!!!!!!!

      If you're looking more power this is the way to go. When I ordered this performance intake manifold , John from American Muscle said the HP gain should be around 60HP. I could not wait to receive the new manifold. My old intake was cracked in the front and rear and was leaking a lot of coolant. When I received and opened the box I was excited knowing that my intake leak would fixed and disappointed because it looked identical to the old one except for the metal coolant cross over so I wasn't expecting any performance gains. I couldn't of been more wrong. After installing the new manifold and filling with coolant I took her out for a test drive and could not believe how much more power this AMAZING new manifold gave. John from American Muscle couldn't have been more correct. It feels like it's got 600 horse power. So much fun to drive, especially to do burn outs. Thank you American Muscle.


      Year: 2000 Submodel: GT

      Helpful (5)

    • 4/5

      Installation Time: Afternoon

      January 25, 2013

      Actually stock

      To clear up any confusion for 2003 owners this is straight up stock so all you need to do is get gaskets and o rings. I recommend cleaning the head where the gasket sits before replacing.


      Year: 2003 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      November 17, 2011

      Stock part, Inexpensive, with great service

      AM had this to me within a few days after I ordered it and has great customer service. I have an 03 GT and these came stock on that year. If your old one blew and your not racing the car, this is the manifold for you. Install would have only take 2 hours had I done ANY work on this car before. Of course I can feel a difference from the factory original put in 2003...


      Year: 2003 Submodel: GT FL

      Helpful (5)

    • 5/5

      May 25, 2011

      Revised Review for a Revised Manifold

      I'd like to be fair and revise my review. Since my last review, I've learned that Ford has revised this intake manifold to have aluminium coolant runners instead of the horrible plastic. You'll notice it because it's the only aluminum area on the manifold. This basically fixed the inherent problem with this intake, and I have to appluad Ford for revising this, because we all know they surely didn't have to. This intake is now a viable option for replacement. For those short on money it's a really, really good buy; because you're now getting the same reliability that people could only get from buying an all aluminum intake manifold, for as little as 1/4 the price. This manifold will not crack like the old one, so you can be assured your money will not go up in white smoke 12 months later.


      Year: 2000 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      March 20, 2013

      Great alt to after markt intake

      had craked intake leaking cooling all over the place, got this intake and street fighter coils and plugs for lesse that the price of a afther market improuvment add up a cold air intake and it had wake up my stock 4.6 !!! realy like it and you can feel the wroring of the engine !!! Tks To Dupuis Ford for the great word they done on it !!!


      Year: 2003 Submodel: GT Casselman, ON K0A, Canada

      Helpful (4)

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