K&N Filters FIPK Air Intake Kit for Ford F150 / Lincoln Mark LT 5.4L V8 (KNN57-2556)
The K&N Filters FIPK Air Intake Kit for Ford F150 / Lincoln Mark LT 5.4L V8 (KNN57-2556) is engineered to deliver increased horsepower and improved throttle response by replacing your factory intake system with a high-flow setup. This kit is designed for 2004-2008 Ford F150 and Lincoln Mark LT models with the 5.4L V8 engine. Featuring a washable and reusable high-flow air filter, the system ensures long-lasting performance and better filtration. The intake tubing is aerodynamically engineered to reduce restriction, helping your engine breathe easier. Installation is simple, with most setups taking under 90 minutes using basic tools. Ideal for drivers looking to improve engine efficiency, airflow, and sound while maintaining OEM-level fit and reliability.
Features and Specifications:
Vehicle Fitment: 2004-2008 Ford F150 / Lincoln Mark LT with 5.4L V8 engine
Air Filter Color: Red
Air Filter Material: Cotton Gauze
Air Filter Outlet Shape: Round
Included: Mounting Hardware, 7 Clamps, and 3 Couplers
Clamp Material: Stainless Steel
Clamp Style: Regular
Intake Pipe Color / Finish: Black
Intake Pipe Material: High-Density Cross-Linked Polyethylene
CARB EO Number: D-269-37
Estimated Horsepower Gain: 15.46 HP @ 3829 RPM
Replacement Filter: RU-1020
Alternate Replacement Filter: RF-1020
Increased Performance: Boosts horsepower and torque for improved engine output.
HDPE Intake Tube: Roto-molded for durability and efficient airflow.
High-Flow Filter: Direct replacement air filter enhances throttle response and engine sound.
Optimized Airflow: Engineered for high airflow and superior filtration efficiency.
Low Maintenance: Filter requires cleaning only every 100,000 miles under everyday driving.
Easy Installation: Installs in under 60 minutes using basic hand tools.
Emissions Legal: 50-state legal for street use.
Product identification
- Brand: K&N Filters
- Model / MPN: KNN57-2556




