Steeda Mustang Mach 1 Cold Air Intake (2003-2004)

5 Review(s)
$40.00 (15%)
Steeda High Velocity Cold Air Kits all feature a new Velocity Stack for improved airflow, bringing more oxygen into the cylinder for better combustion.

Part Number: 555 3121

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Steeda High Velocity Cold Air Kits all feature a new Velocity Stack for improved airflow, bringing more oxygen into the cylinder for better combustion.

Designed to work with the Mach 1 signature Shaker Hood Scoop, this model produces measurable results on the dyno - we gained 9.7 RWHP and 14.3 lb. ft. of torque on a recent installation.

In addition to the Steeda Logo stainless steel airbox, the kit also includes a Steeda Lifetime Filter that can easily be cleaned and re-oiled, making maintenance a snap. All hardware required for installation is included in the kit, along with illustrated instructions.

The kit mounts in the same location of the factory plastic piece it replaces, and it installs simply with just a few hand tools. Plenty of performance for the bucks!

Read more about the advantages in Steeda Mustang Cold Air Intakes over the competitors on our blog:

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
  • Does not get heat soaked like factory air box
  • Cools to ambient temperature range significantly faster than the stock unit while producing more power
  • Added horsepower and torque
  • Lifetime filter
  • Keeps hot air out, cold air in
  • Stainless Steel Housing & Shield ( Not Cheap Plastic )
  • Steeda has been building Cold Air Intakes for Ford performance vehicles longer than any other company!

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features


Manufacturer: Steeda Autosports
Made in USA: Yes

Installation Information:

Level of Difficulty: Easy
Install Time: About 1 Hour
Tools Required: Basic Shop Tools
Print Instructions: Installation Instructions

Vehicle Fitment:

Fits Model Year: 2003, 2004

Customer Reviews

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Average Customer Ratings


2004 Mach 1 CAI
Install took about an hour. I DID NOT use the stock MAF screen and the car idles and runs great. I have always been pleased with products from Steeda and the stainless cover looks great too.
Did you find this helpful?  1 of 1 Found Helpful
Just yes!!
It's by far the best cold air intake for the money. Steeda really does their research and stands behind their products.
Did you find this helpful?  2 of 3 Found Helpful
very good intake kit for the price
simple installation. good price. looks good. definatley increased horsepower and torque and also got a small fuel economy improvement. also added a louder intake sound that you can hear. almost sounds like a supercharger whine. very good intake kit for the price. definatley got at least 10 rwhp and 14 ft lbs torque.
Did you find this helpful?  2 of 2 Found Helpful
Quality product
Easy install and looks great under the hood! Steeda makes a quality product as always.
Did you find this helpful?  2 of 2 Found Helpful
Easy install
Went together like a champ. Made sound throatier and could feel the extra power from the Cold Air. However the bottom plate did not come with any grommets so the plate rubs against metal. The squeaking is annoying. Have to buy grommets.
Did you find this helpful?  4 of 4 Found Helpful
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