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K&N Series 77 High Flow Performance Cold Air Intake (97-03 4.2L)

Market Price $420.89 You Save 13% ($54.90)
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  • Item T525666-B
  • MPN# 77-2550KP

Will this fit your F-150?

Features & Details

  • Series 77 High Flow Performance Cold Air Intake
  • Increases Performance
  • Free-Flowing Aluminum Intake Tube
  • Oiled Air Filter Removes Harmful Contaminants
  • Filter is Washable and Reusable
  • NO Computer Tune Required
  • Simple Bolt-On Installation
  • CARB EO # D-269-31
  • Fits All 1997-2003 4.2L F-150s
Improves Horsepower. The factory air box housing and paper filter element on your 4.2L F150 is restrictive when it comes to the air flow. Replace it with the K&N Series 77 High Performance Cold Air Intake and feel the true power your pickup is capable of producing. The high-flow K&N filter assembly and smooth intake tube will provide a noticeable increase in horsepower, acceleration and throttle response while still providing excellent filtration. Gains of 6.15 HP and 7.08 ft./lb. of torque has been seen on a stock 4.2L F-150.

No Tune Required. Unlike other Cold Air Intakes on the market for the 4.2L F-150s, this K&N Series 77 CAI does not require a computer re-tune. The engineers at K&N really did their homework to improve your truck's power using the factory 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. Designed to be a direct fit replacement for the factory intake this K&N Series 77 Cold Air Intake Kit installs with just basic hand tools. No extra modifications or special tools are required for an easy 1 hour installation. All necessary parts and instructions are included.

CARB Certified. Best of all this K&N Cold Air Intake Kit is 50-state smog legal under Carb EO# D-269-31.

Application. This K&N Series 77 High Flow Performance Cold Air Intake is specially designed to fit the 1997-2003 F-150s equipped with the 4.2L V6 engine.

Please Note. This K&N Cold Air Intake is not designed to be used with F-150s equipped with a body lift.

Note: Coupon codes cannot be applied to this product.

Fitment: 1997 1998 1999 2000 2001 2002 2003 Details

What's in the Box
  • (1) Intake Tube
  • (1) Heat Shield
  • (1) Mass Air Adapter
  • (1) Air Filter
  • Necessary Hardware
Installation Info
Will it fit my F-150?

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Q & A

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my truck has 3 inch body lift and 3 inch suspension lift on 35 inch tires why does the 77 high flow air intake not work my foctory box is in factory spot with no problems even into the fender


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Customer Reviews (1) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Less than 1 Hour

  • Performance Gain 2 2
  • Fit 5 5

  • 5/5

    Installation Time: Less than 1 Hour

    August 23, 2017


    Definitely better acceleration sounds a bit better, haven't noticed any significant change in fuel consumption.


    Year: 2003

    Helpful (0)

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