2004-2008 F150 5.4L K&N Cold Air Intake 77-2556KP

Inexpensive & Quick Way To Boost Horsepower

You can always trust the brilliant intake engineers over at K&N Filters to design something special for your Ford F150, and the 77-Series High-Flow Performance Air Intake Kit does not disappoint. Adding a cold-air intake is a perfect way to get some easy power and performance gains for your truck. The 77-Series intakes are up-gunned versions of K&N's more standard cold air intake kits. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow, allowing your truck's engine to inhale a larger amount of air than the restrictive OEM air filter assembly.

High-Quality Engineering

On top of their impressive power gains, this Cold Air Intake Kit improves your truck's fuel economy and throttle response, making it one of the most effective upgrades you can grab for your 5.4L F150. When they designed their 77-Series kits, K&N dug up the largest air filter that they could possibly fit in place of your truck's factory air box and built the rest of the system around it. The filter is one of K&N's classic high-flow oiled systems that brings in a much larger volume of air than stock along with improved filtration. Along with the filter, each K&N 77-Series kit comes with a full heat shield assembly and a highly efficient inlet tube that works together to promote improved airflow into your truck's engine over the stock air box.

Dyno Results: +9.55 HP / Torque Gains: +13.48 lb./ft.

Fitment: 2004-2008 Ford F150 5.4L.

CARB-Approved/Street Legal: This Cold Air Intake has been approved by the California Air Resources Board (CARB), making it street and highway legal in all states. CARB EO#: D-269-37.

Installation Note

Included in this kit are detailed instructions for a relatively quick and easy installation (takes approximately 1.5 hours using standard tools).

Free Custom Re-Tune Program: While K&N's Cold Air Intake doesn't require custom tuning, its performance is greatly enhanced with one of our 5-Star Custom Tunes which will also qualify you for our Lifetime Tunes Program where you can receive free re-tunes for the life of your truck on products that you purchase from Stage 3 Motorsports! Check out our Lifetime Tunes Program page or call 1-877-578-2433 for more information.