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Airaid Cold Air Intake - Synthaflow Oiled Filter (99-04 GT)

Market Price $305.89 You Save 13% ($39.90)
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  • Item 52102
  • MPN# 450-204

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Features, Videos & Details

  • Add up to 35 HP and 55 TQ With Optional Tune
  • Provides Filtration Down to Two Microns
  • Filters are Washable and Reusable
  • CARB EO# D-609-5
  • Fits 1999-2004 GT Mustangs

Review & Installation Video

Hey everyone, Justin from here and today I have the cold air intake system from Airaid for all 99-04 Mustang GTs. Airaid has become one of the heavy hitters in terms of producing performance intakes and checking out this kit here today, it’s easy to see why, that quality construction and that sleek black appearance have made it one of our customer favorites. This kit from Airaid completely replaces your factory intake using everything you see here, you’ll receive the large diameter intake tube, plastic heat shield, reusable high flow filter, and all the hardware and couplers needed for install. Besides looking great under the hood, this kit is going to make more power and torque and actually increase your fuel efficiency as well, which is always a nice little bonus. You don’t have to run a tune when running this intake from Airaid, but we like to recommend pairing it up with one of our custom Bama tunes, to get the most power out of your car. Now let’s get that restrictive airbox out of there and install this kit from Airaid. This is something any backyard mechanic should be able to tackle in about an hour’s time using standard hand tools. In addition to installing the Airaid we’re also going to upload our custom 93 octane Bama tune, in hopes of really making some power with our cold air. This is going to optimize our spark timing, tweak those air/fuel ratios, and give us improved throttle response, and for automatics we’re also going to see increased shift firmness, and adjusted shift points. Now that we have our intake and our tune installed on our GT let’s run it one more time on the Dynojet, and see just how much power we were able to squeeze out of this combination. So our baseline run with our automatic 2000 GT gave us 222 horsepower and 260 ft/lbs of torque, our second run with the Airaid installed gave us 249 horsepower, and 295 ft/lbs of torque, making for a peak gain of 27 horsepower at the rear wheel, and gains of 34 horsepower, and 55 ft/lbs of torque, throughout the curve. There’s no denying our under the hood appearance has been improved, and our Dyno chart leaves us no doubt that we certainly picked up some solid gains, thanks in part to this intake from Airaid.

Increase horsepower and torque. Airaid Cold Air Intake Systems are computer designed to give your engine maximum air flow, which translates to more horsepower, torque and an increase in fuel efficiency. Airaid intakes are dyno tuned and tested for maximum performance and efficiency.

Superior Filtration. Each cold air intake provides superior air filtration, since it includes an Airaid Premium Filter with SynthaFlow® technology. SynthaFlow® is a synthetic nano-fiber material that traps the smallest dirt particles that ordinary cotton-gauze “performance” filters just can’t capture. Airaid Premium Filters, with SynthaFlow® can capture particulates down to 2 microns in size. And best of all Premium Filters are washable and re-usable saving you money.

CARB Certified. Best of all this Airaid Mustang FIPK Air Intake Kit is 50-state smog legal under Carb EO# D-609-5.

Application. This Airaid kit is designed to fit the 1999-2004 4.6 GT Mustang with no computer retuning required. By utilizing state of the art computer-aided designs, Airaid Intake Systems offer unmatched fit, finish, and power!

Note: Coupon codes cannot be applied to this product.

Fitment: 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Intake Tube
  • (1) Air filter
  • (1) Reducer
  • (2) Silicone Couplers
  • (1) Heat Shield/Air Box
  • (4) Clamps
  • Installation hardware
Installation Info
Tech Specs
Cold Air Intake Specifications
Year/Model: 1999-2004 GT Filter Placement: Engine Bay
Material: High Density Polyethylene Finish: Black
Manufacture: Airaid Computer Tune Required: No
Will it fit my Mustang?
  • GT - 99, 00, 01, 02, 03, 04

People Who Bought This Item Also Bought

Most Helpful Reviews

Best CAI according to AM

Quality as you can come to expect from Airaid. Very expensive for plastic, clamps and a filter, nevertheless it looks GREAT under the hood. Now I'm proud to open my hood. Noticed a gain. Does about as ...

Read More
Helpful (2)

Worth every dollar

very happy with my order! im very satisfied with american muscle and the overall performance of the car.

Helpful (1)

Overall Rating 4.8 out of 5 stars
Read All 73 Reviews

Customer Photos (43) Submit Your Photo

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19 Questions / 8 Answers

Ask a Question

What should I get ? I wanna get a cold air intake and I'm looking at getting either this one that is listed to add hp and better mpg or I'm also looking at the non-name brand listed $84.99 cold air intake witch is listed to add hp and better throttle response or I might get the chrome BBK cold air intake witch is listed to add hp and better acceleration but I hear they rust after a few years. I've heard this airaid intake adds more hp over the BBK but does it give you less acceleration ? Also this appears to be mounted better and higher up over the other two to prevent sucking up water. Is it worth it to get this ? Will I have more added acceleration with the BBK ? Will the BBK rust after a few years ? Would the $89.99 be just as good ? Will the BBK and or $89.99 be as good as far as MPG ? Witch should I really go with ? what are the facts and differences ?


Helpful (3)
  • In an effort to effectively answer all of your questions, I will share my own experiences with both the BBK and Airaid kits. If you are looking for the highest quality cold air intake for your 99-04, the Airaid is hands down the first choice. I currently run the Airaid and could not be happier. My first CAI was the chrome BBK, and after three years of use, it did begin to rust. I also take great care of all parts of my vehicle, and polished the BBK several times and it still rusted. As far as performance, I felt a slight pick up in throttle response going from the BBK to the Airaid. I also picked up a very very slight fuel economy boost. Also, the filter Airaid uses in this kit is the best filter you could put on your car. Period. To me, keeping my baby running as long and as efficiently as possible is the most important thing, so the Airaid was an easy choice for me.


Show 1 more answer

Does this intake come with an IAT sensor hole? Does this intake come with the IAT sensor hole that the 2000 mustang gt have?


Helpful (1)
  • Yes. Product comes with hole, and included in the provided parts are both a sensor grommet for sensor install, and a grommet-plug for later models that do not have the sensor.


Show 1 more answer

In reviewing the Dyno Gains for the 99-04 GT with Airaid Cold Air Intake and Bama Tunes with the Dyno Gains for the 99-04 Power Pack Bolt On Buildup which essentially adds X-Pipes, Flowmaster CatBack Exhaust and BBK Throttle Body Intake, I can not see a difference in the performance. Am I missing something? It would also be of great value if the Dyno Gains for a stock GT with a Bama 93 Octane tune could be provided, so that we can better assess the gain directly associated with the CAI, in this case, but the value of a baseline holds true for any single performance mod.


Helpful (0)
  • I do apologize about that mix up of information there. Our product testing team and our friends over at Bama are constantly testing our items trying to get the best most accurate information out there for our customers. I will definitely get this sent over to them to see what we can do about getting you the best information.


Will this fit under the SR shock tower brace?


Helpful (0)
  • The Airaid Cold Air Intake will work just fine with the SR Performance Strut Tower Brace.


i recently purchased this cai... should i buy a new maf too or will a new maf not make a difference


Helpful (0)
  • Hi, A new MAF is not necessary, with this Airaid Synthaflow Oiled Filter Cold Air Intake your stock OEM is fine unless it is damaged.

    Chris J

Will this airaid fit over a 70mm TB?


Helpful (0)
  • The Airaid Cold Air Intake - Synthaflow Oiled Filter (99-04 GT) will fit with a 70mm throttle body. The coupler will be a once size fits all and you will need to stretch this to get it over.


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Customer Reviews (73) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Less than 1 Hour

Installation Cost:$100-$250

  • Performance Gain 4.446154 4.4
  • Fit 4.661539 4.7

  • 5/5

    Installation Time: Afternoon

    March 06, 2015

    Great Cold Air Intake

    Bought for my 2004 GT. Looks alot better than the stock intake system. I installed it in little over an hour with basic hand tools. Also added the matching Poweraid Throttle body Spacer. I've ran this combo on a few vehicles I've owned. The gas savings pays for the total purchase eventually. Sounds better too!


    Year: 2004 Submodel: GT Hibbing, MN

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    December 29, 2013

    Best CAI according to AM

    Quality as you can come to expect from Airaid. Very expensive for plastic, clamps and a filter, nevertheless it looks GREAT under the hood. Now I'm proud to open my hood. Noticed a gain. Does about as much as any bolt on. Thanks Shane and everyone else @ AM


    Year: 2001 Submodel: GT Stockton, CA, USA

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    October 25, 2013

    feel more torque

    have a 04 mustang GT, had the steeda cai, not a bad product. changed to the airaid cai, by far, way better. definitely feel more torque. very happy with this cai


    Year: 2004 Submodel: GT Toronto, ON, Canada

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    April 13, 2013

    Airaid Cold Air Intake (99-04 GT)

    Very good product, great quality to. You can actualy feel the increase in horse power and the best thing its an easy install.


    Year: 2002 Submodel: GT Brentwood, CA, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    October 07, 2012

    Airaid cold air intake

    This cai is really good , i couldn't decide if i wanted this one or the steeda , glad i picked this one and i got back $50 on the rebait.


    Year: 2003 Submodel: GT Bay Area, CA, USA

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    September 29, 2012

    Fancy and great features

    It looks great and it just gained me 5 horse power. Not to mention my mustang sounds better than it was. I told my friends about it and they said it was amazing. It looks good and also great to show it off


    Year: 2004 Submodel: GT Greeley, CO

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    August 13, 2012

    Worth every dollar

    very happy with my order! im very satisfied with american muscle and the overall performance of the car.


    Year: 2001 Submodel: GT San Antonio, Tx

    Helpful (1)

  • 3/5

    Installation Time: Afternoon

    January 29, 2012

    Decent gains in higher RPM's

    I installed this on a bone stock 2002 4.6 GT. The instructions were accurate but lacked a warning about how fragile the stock mass air flow sensor is. I was trying to get mine to fit flush (had to get longer bolts to make it work) and cracked the MAF during the install. After fixing the factory/plastic MAF, the rest was easy. Pretty decent gains in the higher RPM/heavy throttle situations. Not much if any improvement down in the lower RPM/partial throttle opening situations. It does wake up a decent amount when in higher RPM / full throttle load situations. I'm debating on adding the Bama Tuner next or a BBK throttle body. I think I would do this again but I was hoping for a bit more performance gain. No whistling or gulping noises which I was worried about. It does sound a little better when you really put the pedal down.


    Year: 2002 Submodel: GT Medford, Oregon

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 02, 2013

    great upgrade

    I recommend this cold air to anyone. Simple installation, great power gains, and improved gas mileage. Yeah it costs a little more but its money well spent.


    Year: 2004 Submodel: GT

    Helpful (2)

  • 4/5

    Installation Time: Less than 1 Hour

    October 22, 2012

    Airaid intake

    Rated it good across the board cause not everything is perfect from fit to finish. Had a little difficult time getting the intake over the 70mm tb but other than that it is a very nice intake. Would recommend this to others


    Year: 2003 Submodel: GT Chicago

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    November 01, 2011


    Bought this to REPLACE my bbk that has been an eye sore under my hood for two years. Very slight gains over the bbk, corrected my mystery sputtering problem, looks very good, and is very well made. I hope everyone reads this and spends a little more money up front for a part that with quality.


    Year: 2002 Submodel: GT Wilmington, NC

    Helpful (9)

  • 5/5

    Installation Time: Less than 1 Hour

    August 26, 2012

    Verry nice intake

    Can instantly notice thye difference after install this compared to my last CAI that went under the fender, the cone on this thing is three times bigger! its a monster!!! The sound of the suction is music to my ears!


    Year: 2000 Submodel: GT TX

    Helpful (3)

  • 5/5

    March 16, 2009

    Excellent Cold Air Intake

    The Airaid CAI is an excellent product. I highly recommend this CAI every Mustang GT owner should have an Airaid CAI.

    Chase A

    Helpful (6)

  • 5/5

    November 02, 2009


    Freakin sweet, noticed a big difference in throttle response and seat of the pants feel.

    Bryan Coleman

    Helpful (5)

  • 5/5

    Installation Time: Afternoon

    March 01, 2014

    1999 Mustang GT

    I purchased this Airaid CAI to add more HP to my 'stang. Fortunately, this was a great way to make my GT meaner and better airflow. I like this intake, but it was kind of a pain to line up the velocity stack, the nuts, the mass airflow box, and the air intake box. I struggled with it at first, but eventually got it. Also, the weatherstrip was a HUGE pain to try to put on and I couldn't get it so I just left it off. I hope this shouldn't affect me negatively too bad. But other than that, this intake is a GREAT way to add for HP to a GT.


    Year: 1999 Submodel: GT Goddard, KS 67052, USA

    Helpful (2)

  • 4/5

    Installation Time: Afternoon

    August 16, 2012

    Great OEM look on the car

    I installed this in my 2003 GT in under 2 hours. I found it rather silly about some of the small parts, like AIRAID really couldn't install them themselves. Once in the car I recommend you use the original bolt FORD had in the fender wall as the AIRAID unit is a joke! And MAKE SURE ALL HOSES ARE AND STAY CONNECTED! Car now pulls real strong, even with the stock TB and plenum. Good Buy all around if you don't want go with the pricey JLT unit.


    Year: 2003 Submodel: GT Queens, NY, USA

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    May 16, 2012


    Great part, great shipping all out outstanding, is the only place to buy parts!!!


    Year: 2001 Submodel: GT Phoenix, AZ, USA

    Helpful (2)

  • 4/5

    Installation Time: Afternoon

    December 08, 2011


    This is a good part enjoyed putting it together but the only this is if you have anything bigger then a 65mm throttle body the sleeve is a bit tight and the clamp is too small so I had to pull one off the stock air intake


    Year: 1999 Submodel: GT Crawfordsville,IN

    Helpful (2)

  • 5/5

    August 22, 2011

    Excellent Product

    I replaced my K&N with this Air Raid, and what PERFORMANCE! I noticed a dramatic difference as soon as I drove my car after installation. I would recommend this product to anyone looking for a really good CAI.


    Year: 1999 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    December 26, 2012

    Great Fit

    Got this as a Christmas gift and put it in today. Great instructions with pictures and very simple to install. One thing I will say, when taking out your old system, dont just rip and throw it out, you will need a few parts. Also, when tightening down the "Hump" boot to the MAF housing, dont push it all the way down, it will interfere with reattaching the MAF sensor. Great intake, not sure about the K&N Box, but the Airaid box has a nice extension that fits into the fender well to grab the air.


    Year: 2001 Submodel: GT Sierra Vista, AZ, USA

    Helpful (3)

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