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K&N Engineering Part # KNN77-2556KP

K&N 04-08 Ford F-150 V8-5.4L High Flow Performance Kit - 77-2556KP

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Built for performance and show utilizing the highest quality components, the K&N 77 Series High-Flow Performance Air Intake is a free-flowing mandrel-bent aluminum tube induction system designed for Trucks and Sport Utility Vehicles. 77-Series air intakes come with K&N's Million Mile Limited Warranty. K&N intake systems replace your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your vehicle's engine to inhale a larger amount of air than the OEM air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The filters on these kits are washable and reusable. Most of our intake kits are relatively easy to install using tools commonly available (see installation instructions). Some 77 Series Air Intakes are not legal for use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N catalog or website vehicle parts search for specific CARB status.
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Installation Instructions
Installation Instructions
Installation Instructions

  • Mandrel-bent aluminum intake tube paired with oversized oiled cotton air filter.
  • Engineered to provide high airflow and exceptional filtration.
  • Replaces factory air filter and intake tube.
  • Filter only requires cleaning every 100,000 miles under normal highway driving conditions.

  • Estimated Torque Gain: 14 lbft
  • Couplers Included: 3
  • Clamps Included: 8
  • Estimated Horsepower Gain: 9.55 HP @ 3724 RPM
  • Intake Pipe Ports: All intake tube ports needed for the specified applications are included
  • Coupler Color/Finish: Black
  • Intake Pipe Color / Finish: Bright Mirrored Finish
  • Air Filter Material: Cotton Gauze
  • CARB EO Number: D-269-37
  • Clamp Color/Finish: Natural
  • Air Filter Color: Red
  • Clamp Style: Regular
  • Air Filter Outlet Shape: Round
  • Replacement Filter: RU-5046
  • Clamp Material: Stainless Steel
  • Mounting Hardware Included: Yes

Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.

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