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K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

Item 92005
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Improves Horsepower and Acceleration.
      • Filters Out Harmful Contaminants.
      • Washable & Reusable Filter
      • Simple Installation.
      • CARB EO Number: D-269-28
      • Fits 2003-2004 Mach 1 Mustangs.
      • No Tune Required


      Improves Horsepower. The K&N "Fuel Injection Performance Kit" (FIPK for short) Air Intake kit completely replaces your stock 2003-2004 Mach 1 Mustangs restrictive stock air box and paper filter with a high flow K&N filter assembly and intake tube for a noticeable increase in horsepower and acceleration while still providing excellent filtration.

      No Tune Required. Unlike other Cold Air Intakes on the market for the Mach 1 this K&N FIPK CAI does not require a computer re-tune. The engineers at K&N really did their homework to improve your pony's power using the stock tune.

      Filters out harmful contaminants. The supplied K&N Filter successfully filter's out harmful contaminants with it's unique layered design. K&N Air Filters are made up of layers of specially treated cotton gauze that are sandwiched between two epoxy-coated aluminum wire screens for durability. K&N uses a specially formulated grade of oil to treat the cotton gauze layers which causes a tackiness throughout the cotton's microscopic strands creating a powerful filtering media that ensures engine protection.

      Washable, Reusable Filter. K&N designed their high flow air filters to be reusable. That means there is no need to buy a new filter every few thousand miles, you can just clean the filter, re-oil it, and save money with a K&N Filter Recharge Kit.

      Straight Forward Installation. K&N FIPK Air Intake kit is designed to install easily with just basic hand tools. No extra modifications or special tools are required for proper installation. All necessary parts and instructions are included.

      CARB Certified. Best of all this K&N FIPK Cold Air Intake Kit is 50-state smog legal under Carb EO# D-269-28.

      Application. This K&N FIPK Cold Air Intake kit is specially designed to fit all 2003 to 2004 Mach 1 Mustang's equipped with the 4.6L DOHC V8 engine. No computer retuning required.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 2003 2004 Details

      MPN# 57-2555

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (18)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 18 customers

      Installation Time: Afternoon

      • December 25, 2019

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        5 2003 Mach 1 - Ellie03Mach1 Installation Time: Afternoon

        Great product

        Installed in less than 2 hours looks good sounds great when I give it gas highly recommend this product

        Helpful (0)
      • July 07, 2019

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        5 2003 Mach 1 - Stangthing Installation Time: Afternoon

        03 Mach1 (Stang)

        The KandN Cold Air Intake matched up perfect. Plus intake did not delete Ram air duct. The power gain is immediate I was able to tell a difference. Nice!

        Helpful (0)
      • June 17, 2017

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        4 2003 Mach 1 - Mank Installation Time: Less than 1 Hour

        So far so good

        Looks good, hoping for a little less restriction out of this. Hose clamps could be a bit larger for install. Only bad part is the connection between the new housing and the shaker tube. It looks weak and does not install too easy. I left the MAS screen out for install. Also someone said the shaker intake air is not filtered by this set up?? It definitely is.

        Helpful (8)
      • March 24, 2017

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        1 2003 Mach 1 - GGGG Installation Time: Less than 1 Hour

        Worst mod I've purchased

        Car will constantly die after poping it in neutral above 50mph, so much for spending 300$

        Helpful (12)
      • February 27, 2017

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        4 2004 Mach 1 - DeanCA Installation Time: Afternoon

        Shaker Filter?

        This took a complete day. All the K and N rubber connections should be set in the sun and get your soapy water ready. The fit and finish for the shaker is a mess. Hole not matching factor hose very well. There are tacky gaps, but with this system air is unfiltered to the shaker. Yep. While your in this deep clean your MAS and throttle body.

        Helpful (10)
      • December 30, 2015

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        4 2003 Mach 1 - 03TMK Installation Time: Less than 1 Hour

        Mach 1 K N CAI

        I am very pleased with the research kandn did with their cold air intake for the 03-04 Mach1. Compared to others, the KandN kit fit perfectly with no rubbing or clearance issues. I'm happy that they have a bracket to support the air filter end of the intake, they actually provide you with dyno proven numbers specifically for the Mach1, and the shaker hook-up lines up great to their metal air filter shield, not a flimsy $0.10 plastic one. Looks great, sounds great, and you feel a difference in the higher rpm range. Best quality and performance for the price.

        Helpful (9)
      • March 20, 2015

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        5 2003 Mach 1 - Brad94 Installation Time: Afternoon

        Great product!

        Looks great. Cleans up the engine bay nicely. Seems to have helped my gas mileage and gotta love the sucking sound. Only complaint was the hose clamp that connects the tube to the mass air is to small. I could only get it to grab one tooth and it stripped it out. Had a bigger one laying around and it worked fine. Is it that big of a deal to just put slightly larger ones in the kit?

        Helpful (9)
      • February 26, 2013

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        4 2003 Mach 1 - George01 Installation Time: Afternoon

        Great product

        I am very satisfied with this product. Fit and finish was excellant except one part. The ram air connection fit was off. I spent less that an hour installing the main components but several hours trying to hook up the ram air to the filter housing. Was not able to get a good fit without some "customizing" .

        Helpful (9)
      • January 08, 2013

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        5 2003 Mach 1 - WIGS Installation Time: Afternoon

        And must have on the mach

        Looks outstanding. It actually surprised me that the kit had a new filter cover. Fitment was kinda hard due to short hose clamps. An extra half inch would have been nice but it work with some elbow grease and screw driver. As soon as I started the car I heard a difference in exhaust. I even heard the filter ducking air. GREAT PRODUCT.

        Helpful (9)
      • October 22, 2012

        Review shared from K&N Series 57 FIPK Cold Air Intake (03-04 Mach 1)

        5 2004 Mach 1 - iSayWhtSheFeels Installation Time: Less than 1 Hour

        K&N FIPK Cold Air Intake (03-04 Mach 1)

        Dont think just buy ! Easy install, noticed and instance difference as soon as i took it for a spin after the install. Looks good, sounds good, cant go wrong for the price you pay.

        Helpful (9)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      Will it fit with a Steeda 3point strut tower brace?

      • We have not used the K&N FIPK Cold Air Intake (03-04 Mach 1) with the Steeda three point strut tower brace. I do not believe they will work together just by looking at where the intake sits at the mounting points of the strut tower brace.

      Helpful (2)

      Does this fit an aftermarket throttle body?

      • The K&N FIPK Cold Air Intake will fit all aftermarket throttle bodies for the the 03-04 Mach 1.

      Helpful (0)

      Is this California legal and will it be allowed when I do a smog test?

      • The K&N FIPK Cold Air Intake is Smog legal and carries the CARB EO # D-269-28

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Air filter
      • (1) Heat shield
      • (1) Intake tube
      • (1) Reducer
      • (2) Couplers
      • Installation hardware

      Tech Specs

      Cold Air Intake Specifications
      Year/Model: 2003-2004 Mach 1 Filter Placement: Engine Bay
      Material: High Density Polyethylene Finish: Black
      Manufacture: K&N Computer Tune Required: No

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