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OPR Replacement PI Intake Manifold w/ Gasket Set (99-04 GT)

Item 100978
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Market Price $188.99 You Save 12% ($22.04)
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$166.95

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    Features & Details

    • OEM Style Replacement PI Intake Manifold
    • Composite Plastic Construction
    • Aluminum Crossover
    • Pre-Installed Gaskets
    • Black Finish
    • Fits 1999-2004 GT's with Performance Improved Heads
    OEM Style Replacement. If the stock intake on your 1999-2004 GT Mustang is cracked and causing you issues, replace it with a brand new direct fit replacement that includes an improved aluminum crossover to prevent future problems.

    Improved Design. Manufactured to the original factory specifications from OEM quality composite plastic, this OPR Replacement Intake Manifold features an improved aluminum crossover and pre-installed gaskets for ease of installation.

    Application. This OPR Replacement PI Intake Manifold is designed to be a direct bolt-on 1999-2004 GT Mustangs equipped with the stock PI (Performance Improved) heads and reuses the stock alternator and other stock engine accessories.

    Ford Motor Company equivalent part# 1W7Z 9424-AB, 3W7Z 9424-AA, 3W7Z 9424-AD, 3W7Z 9424-AE, 6W7Z9424AA, 9W7Z9424A

    OPR

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    MPN# 100978

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) PI Intake Manifold with Integrated Gaskets
    • (1) Thermostat
    • (1) O-Ring
    • (1) Threaded Metal Plug
    • Bolts and Nuts
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos (20) Submit Your Photo

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        Questions & Answers (16)

        5 Top Rated Questions

        This replacement intake has the pre installed gaskets right? Will I need to buy the gasket strip separately and place under the manifold? Or do I just clean it off and set the manifold directly on the metal? Will the pre installed gaskets prevent leaks or do I need a separate gasket strip?

        • Yes just set the new intake with the pre installed gaskets directly on the heads after cleaning first of course, the gaskets provided should comply with the oem specifications therefore they should give no problem

        Helpful (7)

        What are PI(Performance Improved) heads, and how do you know which ones I have? My car is an 01GT w/ factory heads.

        • PI heads are what Ford called the Performance Improved cylinder heads on the 99-04 4.6L 2v Modular V8. Short version: You have PI heads, while stock 96-98 GT models don't. Long version: The 96-98 SN-95 Mustang GT models used a very similar 4.6L 2v Modular V8, but they only made 215-225 HP stock. With the release of the New Edge models, Ford swapped out the heads for the PI ones, made this better intake manifold to fit them, and swapped out the camshafts for better ones. This brought the engine to 260 HP for 99-04. Outside of these part swaps, the non-PI engines are functionally the same as the PI engines.

        Helpful (1)

        What's the difference between this manifold and the one from Ford Racing (Item #24010)? Will the other one perform better or last longer? They look about the same.

        • This Replacement PI Intake Manifold w/ Gasket Set is an aftermarket replacement for your factory intake manifold for the 1999 to 2004 Mustang GT. The Ford Racing Intake Manifold will be slightly larger and flow better than this factory replacement.

        Helpful (1)

        What alternator bracket do I need? I have the 2000 Mustand GT. Do I just simply order a alternator bracket off a 2001 Mustang GT?

        • I ordered the manifold, and put it on a 2000 GT I ended up not needing the bracket. I also read for the people who need the bracket you can just drill new holes in old bracket.

        Helpful (1) Show 1 more answer

        It says this only fits 99-04 but how different are the intake manifold ports compared to a 1998 sn-95. We've been having trouble with the plastic notorious leaking manifolds, and a cast aluminum manifold would be much nicer. Do I need pi heads or will the intake manifold gasket/ silicone trick work? Thank you!

        • Unfortunately this manifold will not work with the 1998 models as it is designed for the 99-04 Mustang GT models.

        Helpful (0)
        Post Your Question
        10 More Questions
        Is this manifold American made? Also, is this the easiest and most straightforward manifold to replace the stock one with w/o any modifications on a 2000 Mustang GT? (The car is all stock and just want to replace a leaky manifold.) 1 answer
        Is this a dorman brand? 1 answer
        What is the service life for the OPR manifold? I am only getting 4 to 5 years on the Dorman units. 1 answer
        Well this need a new heater hose 1 answer
        Can any gasket set be used or does it have to be the individual ones like shown in the picture? 1 answer
        Will this fit a stock 4.6L 2004 GT? 1 answer
        Will it fit 03 3.8 v6 1 answer
        Why wouldn't it fit a crown Vic it's the same engine 4.6 2v and the manifold looks just like this one. 1 answer
        Will this fit a 08 crown Vic police interceptor? 1 answer
        I have a 2000 GT and the pipe that feeds coolent broke off do I need to replace the entire intake manifold? So I know if I should order it 1 answer

          Customer Reviews (82) Write a Review

          Overall Rating 4.4

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Performance Gain 3.527778 3.5
          • Fit 4.708333 4.7



          • 1/5

            April 07, 2019

            Don't Waste your time

            Do yourself a favor and spend the extra money on the Ford Racing intake. This one is cheaper for a reason as they cut as many corners as possible. Mine destroyed itself in less than a year in the area below the thermostat. Plastic blew apart along with the garbage gasket. Don't waste your time or $.

            MustangJohnny

            Year: 2003 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            February 25, 2019

            Does it’s job

            If you have a 99-04 mustang GT, you’ve probably had your intake manifold crack. Replaced it and fixed the leak with this. Didn’t feel any noticeable HP gains

            Wicked2Valve

            Year: 2003 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            January 30, 2019

            Intake

            Fit perfectly...works great....no leaks..no issues...here fast too!

            BbradG

            Year: 2003 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            January 06, 2019

            PERFECT FIT AND PERFORMANCE

            INSTALLED IN MY 2004 GT LOOK OK NO PROBLEM TO FIT. FEEL LIKE MORE POWER.. GOOD PRODUCT.

            CuauhtemocB

            Year: 2004 Submodel: GT

            Helpful (4)

          • 4/5

            Installation Time: Afternoon

            December 29, 2018

            Good intake for the price

            I decided to go the cheaper route when replacing my intake manifold as I’m planning on selling the car in the next year or so. I had been fighting a coolant leak that was starting to get pretty bad. Coolant was leaking into cylinder 1 and 2 causing the plugs to foul which resulted in misfires. Replacing it was pretty straight forward after watching a few YouTube videos. Make sure you have a torque wrench and follow the bolt tightening pattern and torque specs. I went ahead and replaced the spark plugs while everything was apart which made that job a little easier. Do not use the thermostat housing spacer or the included thermostat gasket. I had a leak from there using them. (Wasn’t sure if I needed the spacer or not, but obviously not) Took out the spacer and it still leaked slightly with the new gasket. I put my old gasket back in and there was no longer any leaking from that area. It has been about 3 weeks and I have had no issues. Didn’t notice any power loss or anything, but the car is my daily driver so I’m not driving it hard.

            ChristopherJ

            Year: 2003 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Afternoon

            December 19, 2018

            Does the job

            I bought this to replace my leaking intake on my 2004 4.6 Explorer. The directions werent much to go by. I'm just glad they had the pattern to tighten down the intake properly. Sealed up good and fit perfect. Would buy again if I had to replace the one on my Mustang

            BrandonB

            Year: 2000 Submodel: GT

            Helpful (3)

          • 1/5

            November 17, 2018

            It works with less horsepower

            After installing this Dorman intake manifold my car had noticeably less power. After I noticed this, I looked online and there is others that said they lost 15 horsepower, and dyno proven. If you're in a pinch for money and this is all you can afford then get it. Otherwise get the Ford Performance intake manifold. That's what I should have done. I'm very disappointed in this intake manifold.

            BrianM

            Year: 2002 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            September 07, 2018

            nice piece

            Item was nice,fit well,for the money should have came with the gaskets.but it is what it is..otherwise not bad

            KenC

            Year: 2001 Submodel: GT

            Helpful (1)

          • 3/5

            Installation Time: Full Day

            August 31, 2018

            Return

            I decided to send it back as soon as I got it and went with the ford performance intake instead might as well spend the extra money

            Jonathan

            Year: 1999 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            July 29, 2018

            Fixes all my issues

            Was fighting a coolant leak for months at the thermostat housing on the old plastic manifold. The aluminum crossover solved this issue and was easy to install myself in just a few hours.

            DylanW

            Year: 2000 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            June 26, 2018

            GREAT fix

            Didn't know they crack but got a great fix! Wished it wasn't plastic but that's the way they are made.

            NHRAMBR

            Year: 2003 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Afternoon

            April 25, 2018

            Great replacement

            Fitment was perfect didn't have any issues and would definitely recommend for others.

            AustinC

            Year: 2004 Submodel: GT

            Helpful (4)

          • 4/5

            Installation Time: Weekend

            April 19, 2018

            I give it 4 Stars

            I bought this I take because it was the only thing I could afford mine was shot. So far I like it only took about 1 he 45 mins with help so. O would recommend it because I don't have to miss with the gasket sliding around when you put intake on so thanks American muscle for a great product

            BrianH

            Year: 2000 Submodel: GT

            Helpful (5)

          • 3/5

            Installation Time: Weekend

            March 22, 2018

            Its ok

            Came quick pretty much like oem accept the bracket hole dont line up car still leaking from the it might need new heads though alaround solid would suggest' the ford performance because of the reinforced thread holes

            Mrreckem

            Year: 2001 Submodel: GT

            Helpful (4)

          • 4/5

            Installation Time: Afternoon

            March 01, 2018

            Intake manifold

            I love my new intake manifold only problem was the alternator bracket had to be cut but other then that it was perfect

            CameronC

            Year: 2001 Submodel: GT

            Helpful (4)

          • 5/5

            February 18, 2018

            Great Product!

            Fit as well as described and would recommend to anyone looking to replace an all plastic factory intake.

            Mark

            Year: 2002 Submodel: GT

            Helpful (6)

          • 2/5

            Installation Time: Afternoon

            January 23, 2018

            Not very impressed

            First off, please just do not buy this product. It looks nice in the picture, but they made this intake as cheap as possible and it shows. All the parts were not included in my kit (the plug for the open hole by the thermostat). I'm not impressed one bit with this product. I would have been much happier with just spending 80 more dollars on a better one.

            TylerH

            Year: 2001 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            January 20, 2018

            Perfect fit

            Perfect fit guys. Just becareful with the plastic holes not to strip out a screw hole push down good and firm while tightening and you’ll be good to go

            02stang

            Year: 2002 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            January 06, 2018

            Just in time

            My passenger gasket went out so I bought a new manifold because I wasn’t sure if the old one was bad so to save money instead of buying one gasket I bought this and when the manifold came off it was warped so I did save money and didn’t have to worry for my drive up north for the holiday. Plus it looks better small visual difference.

            TimothyJ

            Year: 2001 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Afternoon

            January 05, 2018

            Perfect Christmas Gift

            Perfect fit!!!! if you are having problems with the thermostat housing leaks and all. This is a must have complete seal!!! perfect fit, no issues what so ever. Took me a while to install since you get the chance to get everything cleaned up for when its back on you don't have that dirty engine with a new intake manifold. Fitted on my Roush 2000 and gave it quite a tune-up.

            OrlandoZ

            Year: 2000 Submodel: GT

            Helpful (3)

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