Steeda HARDCORE Mustang GT MaxFlow Closed Cold Air Intake (2015-2022)

10 Review(s)
$40.00 (8%)
Steeda's dyno tested S550 HARDCORE Mustang GT MaxFlow closed air intake kit adds up to 25 horsepower with a high volume / cooler air charge that lets your 5.0L Coyote breathe.

Part Number: 555 3220

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Horsepower per dollar, Steeda's S550 Mustang GT MaxFlow Closed Cold Air Intake is the best choice for stock intake manifold 2015+ Coyote powered Mustangs. Steeda MaxFlow Mustang Cold Air Intake for your S550 opens up the induction system of Ford's 5.0 powerplant and allows it to breathe much more freely than the stock intake system allows, taking your S550 Mustang GT to the highest level of performance. The system comes with an oiled reusable high flow panel filter and a high flow dry filter is available separately.

Warning: Not approved for sale in California or states that require a California E.O. #. This part has been designed and is intended for off-road application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations.

Note: Federal and several state and provincial laws prohibit the removal, modification or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. Steeda Autosports assumes no liability for any violations arising out of any federal, state or provincial emissions or safety requirements on motor vehicles arising out of the customer's modifications and/or use of Steeda products. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws. This limited warranty is the only express warranty applicable to Steeda Autosports products. Other rights may arise or vary from state to state in the United States. Steeda is not responsible for any time for which you may lose the use of your vehicle, any inconvenience you might be caused, the loss of your transportation or any part thereof, or any other incidental or consequential damages you may have.

Product Benefits
  • CAD designed air box lid and tube [sealed]
  • Largest mass air meter on the market (121mm) for most airflow possible
  • Coolest intake air temperatures (IATs) on the market for consistent performance
  • 25HP increase more then stock
  • 30HP increase over stock at mid-range [max gains]
  • Fits all 2015+ S550 Mustang GTs, including 2018 and newer
  • Includes our washable Steeda S550 Mustang Oiled Air Filter ( #555-3221)
  • Quick and easy install
  • Used on the Steeda 'Silver Bullet', the FIRST NA 2018 Mustang to get into the 10s in the 1/4 mile ( Click here to see it in action )
  • Retains all factory vacuum lines with optional sound tube delete
  • Utilizes the factory grille duct
  • No turbulence due to placement of factory hood vents on 2018
  • Made in the USA
  • Lifetime warranty
  • Steeda has been building the best Cold Air Intakes for Ford performance vehicles longer than any other company
  • Check out the included dyno sheet for hp/tq gains

Note: Drop-in air filter color may vary.

CA Residents: Cancer and Reproductive Harm WARNING

Hi everybody Brian from here today to talk to you about the S550 Pro Flow Cold Air Intake. Our design and engineering teams worked late and burnt the midnight petroleum to bring you the best intake on the market for your S550 Mustang GT. We designed the Pro Flow Intake with a closed airbox this is really, really important because it keeps engine heat hot engine heat away from the air inlet. This will keep your intake air temperatures down and increase horsepower, increase the torque and increase throttle response. Now to put that in the numbers with our tune on our chassis dyno we're able to achieve 25 horsepower up top at the tires and 30 horsepower down in the mid-range. That's going to improve acceleration it's going to improve throttle response, going to improve the way that the car accelerates. Furthermore we've done a ton of real-world testing whether it be daily driving it up and down the turnpike, around town road trips between Florida and Georgia. We've continued to test it as well on our race cars. Our Championship S550 Road Race Car as well as the Silver Bullet that's well into the 10-second range in the quarter-mile. We were able to achieve these great results due to the use of massive inlet tube 121 millimeters, the largest on the market. Also included with the Pro Flow Intake is our Steeda high flow washable filter. We also provide all the necessary mounting hardware to put the kit into your car. We are very proud to say that our Pro Flow Intake is manufactured in the USA because Speed Matters. If you have any questions please feel free to post them below. Be sure to visit us at to learn more about the intake and many of our great products. Don't forget to visit us on social media and have a Great Day!!
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Fitment & Features


Manufacturer: Steeda Autosports
Made in USA: Yes

Installation Information:

Level of Difficulty: Easy
Install Time: About 30 Minutes
Tools Required: Basic Shop Tools
Print Instructions: Installation Instructions

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022

Customer Reviews

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Average Customer Ratings


Works as expected
I didn't have any issue installing this piece. It is a tight fit, but it fit without modification or foul language. Tuning was easy and brought up the power as expected. Good product
Did you find this helpful? 
First of, the intake itself get 5 stars. Why only 4 stars for the review? Well, the instructions are only 50% complete. There are other pieces that came with the kit that are not even mentioned at all but are needed. By taking my time I was able to put it together. Result is amazing, car pulls even better than before. As someone else already mentioned, getting the airfilter housing back on took some force, I had to hold down the housing with a channel locker to be able to snap the clamps back on. Steeda needs to address this. Instructions: 3 star Fit: 4 star Completed install and test drive: 5 star
Did you find this helpful?  2 of 3 Found Helpful
2018 Mustang GT PP2
My first steeda product. I check dyno numbers after every mod. Coupled with everything else, I picked up 15 hp with the insert in and an additional 20 with the insert removed. E85/catless longtube/airbox. Car made 509 hp / 461 tq on a mustang dyno.
Did you find this helpful?  12 of 13 Found Helpful
Closed Cold air intake
This is a great part,works well, dose what it's supposed to do, looks like great, A+++, Steeda got it right with this one...
Did you find this helpful?  2 of 2 Found Helpful
Happy Customer
Took about an hour unrushed to remove the stock system and oem paper filter and replace with the Steeda and reflash the ecu. Would like it if it was easier with the intake clips for sure, but overall a quality system. Definitely feel a difference! Would recommend to anyone who wants the best intake without drawing in hot air from the engine bay.
Did you find this helpful?  6 of 6 Found Helpful
Verified Buyer  
Mold is less then desired i had to dremel for 45 minutes to make it work it still doesn't fit properly but its the best intake by the numbers but so far its been about 50/50 with Steeda in 2020
Did you find this helpful?  10 of 11 Found Helpful
ProFlow Closed Cold Air Intake
I wanted to let you know that I installed the ProFlow Closed Cold Air Intake on my 2015 Mustang GT. The only mods to the engine is CAT back Corsa and the new ProFlow cold air intake. I took it over to the DynoComp to get it tuned. The numbers were impressive. 8 pulls resulting with 459 rwhp and 419 ftlb at the wheels on 91 octane.
Did you find this helpful?  11 of 16 Found Helpful
Verified Buyer  
air intake
everything came in perfect I cant wait to install it.
Did you find this helpful?  1 of 1 Found Helpful
Medical record
I install one in Steeda shop onMy 2019 mustang gt.I am very happy ??
Did you find this helpful?  2 of 11 Found Helpful
2018 GT
Looks great. The tube is massive for moving lots of air.
Did you find this helpful?  20 of 34 Found Helpful
Verified Buyer  
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