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K&N Series 57 FIPK Cold Air Intake (04-08 4.6L)

Market Price $372.59 You Save 13% ($48.60)
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  • Item T525661
  • MPN# 57-2557

Will this fit your F-150?

Features & Details

  • Improves Horsepower and Acceleration
  • High Density Polyethylene Intake Tube
  • Filters Out Harmful Contaminants
  • Filter is Washable and Reusable
  • No Computer Tune Required
  • Simple Bolt-On Installation
  • CARB EO Number: D-269-31, D-269-34 or D-269-37
  • Fits 2004-2008 4.6L F-150s
    Improve Your Horsepower and Torque. Release the hidden horsepower in your 4.6L F-150 by allowing your engine to inhale more air with the use of a Series 57 FIPK Cold Air Intake. K&N's Fuel Injection Performance Kit (FIPK for short) completely replaces the restrictive paper air filter and air intake housing with a smooth black intake tube and a red high-flow air filter. With the unrestrictive flow of air going into your motor, you'll have more usable horsepower, torque and acceleration throughout the entire RPM range, which will be beneficially when you need more power to haul a heavy load up a hill.

    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 filter to be washable and reusable, giving you up to 100,000 miles before needing to be cleaned out, dependent on driving conditions.. 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.

    No Tune Required. Unlike other Cold Air Intakes on the market for the F-150 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.

    Straight Forward Installation. K&N Series 57 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, K&N's Series 57 FIPK CAI is 50-state smog legal under Carb EO # D-269-31 (2004-2005 models), D-269-34 (2006 models) or D-269-37 (2007-2008 models).

    Application. The K&N Series 57 FIPK Cold Air Intake System is specifically designed to fit the 2004-2008 F-150s powered by the 4.6L V8 engine.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2004 2005 2006 2007 2008 Details

    What's in the Box
    • (1) Filter
    • (1) Heat Shield
    • (1) Intake Tube
    • Hardware
    Installation Info
    Tech Specs
    Cold Air Intake Specifications
    Material: High Density Polyethylene Plastic Filter Placement: Engine Bay
    Finish: Black Computer Tune Required: No
    Estimated Horsepower & Torque Gains:
    Estimated 4.6L HP:
    7.84hp @ 4828rpm Estimated 4.6L Torque:
    7.48lbft @ 4828rpm
     Estimated 4.6L HP:
    8.48hp @ 4775rpm Estimated 4.6L Torque:
    9.32lbft @ 4775rpm
     Estimated 4.6L HP:
    9.88hp @ 4200rpm Estimated 4.6L Torque:
    12.35lbft @ 4200rpm
    Will it fit my F-150?
    • FX4 - 04, 05, 06, 07, 08
    • Lariat - 04, 05, 06, 07, 08
    • STX - 04, 05, 06, 07, 08
    • XL - 04, 05, 06, 07, 08
    • XLT - 04, 05, 06, 07, 08
    • King Ranch - 05, 06, 07, 08
    • Harley-Davidson Edition - 06, 07, 08
    • FX2 - 07, 08
    • Limited - 08

    Most Helpful Reviews

    Well worth the time spent!

    item arrived in perfect condition and is complete with all parts youll need and a few extra bits. Installation took me about 2 hours but I had to clean off some corrosion. instructions were clear but make ...

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    Helpful (2)

    K N Intake

    Great part. Easy installation. Gave me f150 a little more hp and sounds awesome.

    Helpful (1)

    Overall Rating 4.6 out of 5 stars
    Read All 5 Reviews

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    Customer Reviews (5) Write a Review

    Overall Rating 4.6

    out of 5 stars

    Installation Time:Afternoon

    • Performance Gain 4.333333 4.3
    • Fit 4.333333 4.3

    • 5/5

      August 29, 2016

      Well worth the time spent!

      item arrived in perfect condition and is complete with all parts youll need and a few extra bits. Installation took me about 2 hours but I had to clean off some corrosion. instructions were clear but make sure you 100 understand what you're doing because the instructions are in black and white combined with an indepth instruction manual/parts list that are easy to get lost in. take your time, grab a friend(s) and take care of this install. once its on youll instantly notice a better sound and a increase in performance that youll feel on wide open throttle. well worth the money spent!


      Year: 2004 Submodel: 4.6L V8 XLT

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      February 28, 2017

      Second cold air kit

      I previously had a simple version with a filter and new air horn with the original air box remaining in place. It did well, but this is well worth the time and effort to get a better response and another 1 mpg increase for my HD edition F150. The kit moves the throttle body up off the intake and puts it on the curved riser in the kit. The overall assembly is fairly straight forward, if you lay out all the parts and remain organized. The growl on WOT is reminiscent of the old qudrajet carbs, I love it. There is a whistle through the filter around the 2000 rpm range. You get used to it. Overall, I am happy with the kit. It helps clean up the engine bay with less bulky items. I recommend it if you don't care about chrome flashy air tubes.


      Year: 2007 Submodel: 5.4L V8 Harley-Davidson Edition

      Helpful (1)

    • 5/5

      October 11, 2016

      K N Intake

      Great part. Easy installation. Gave me f150 a little more hp and sounds awesome.


      Year: 2007 Submodel: 5.4L V8 FX4

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      August 26, 2017

      Great product

      Easy install, took a little over an hour. 1-2 miles per gallon better mileage, better sound. Had a little whistle when first installed, but went away after driving for about 2 hours. Totally satisfied with the purchase.


      Year: 2005

      Helpful (0)

    • 4/5

      Installation Time: Afternoon

      May 23, 2017

      Great product for my Triton but ran into a snag

      Everything about this particular cold air intake was top notch, except for the adapter that comes with it that relocates your throttle body. When I finished putting everything together and started my truck I was getting a god awful high pitch humming sound from right around the throttle body. Found out that the included gasket between the throttle body and the elbow adapter was causing a bad air leak because the rather thin plastic on the adapter begins to bend as soon as you put any torque to it at all. I ended up using some Permatex RTV silicone gasket maker on the top of the elbow between it and the throttle body, as well as between the elbow and the intake manifold. Once I did that and let it cure for 24 hours I was in business, no more leak. In addition where the throttle body is mated to the elbow I added some nuts to the back side of the bolt for extra strength as it did not come with any. In the end I was very happy with the new intake. Looks great in the engine compartment and opened up lots of space to access the motor. Truck seems to get up to speed a little quicker without any additional effort. If KandN can figure out a better way with the elbow so that there are no air leaks I would definitely have given it 5 stars.


      Year: 2005 Submodel: 5.4L V8 FX4

      Helpful (0)

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