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The K&N 57-2581 Performance Air Intake System replaces the factory air filter and intake tube on 2011-2014 Ford F-150 models with the 5.0L V8 engine. This system uses a roto-molded HDPE tube and oversized oiled cotton filter to boost airflow for guaranteed horsepower and torque increases up to 15.32 HP at 5904 RPM. A custom heat shield keeps intake air cool while providing exceptional filtration.
Key Features
- High-Flow Air Filter: Washable reusable oiled cotton media lasts up to 100000 miles under normal highway driving at 7.5 gallons per hour for 20 hours weekly.
- Roto-Molded HDPE Tube: Increases airflow volume to the engine for dyno-proven power gains.
- Custom Heat Shield: Shields intake air from engine bay heat improving performance.
- Ships in 21.1 x 12.5 x 12.5 inch box weighing 9.5 lbs.
- Replaces OEM airbox and tube no computer reprogramming needed.
- Over 50 years engineering air intake systems for street and track.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2011-2014 | Ford | F-150 | FX2, FX4, King Ranch, Lariat, Platinum, STX, XL, XLT |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 57-2581 |
| Product Type | Cold Air Intakes |
| Fitment Type | Vehicle Specific |
| Condition | New |
What's Included
One new K&N cold air intakes identified by manufacturer part number 57-2581. Hardware, adapters, clamps, hoses, filters, and service supplies are included only when stated for this exact product.
About K&N Engineering
K&N develops reusable air filtration, intake, oil filtration, fuel filtration, and related performance products for vehicle-specific and dimensional applications.
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Frequently Asked Questions
How do I confirm K&N 57-2581 fits my vehicle?
Match the year, make, and model in the fitment table, then confirm the engine, factory housing, sensor layout, emissions notes, and any application restrictions stated for this exact part.
Does K&N 57-2581 require tuning or emissions verification?
Requirements vary by vehicle and intake configuration. Check the current K&N application and emissions notes, and complete any required calibration before full-load operation.
What should be checked after installing K&N 57-2581?
Verify seals, clamps, fasteners, hoses, sensors, wiring, and surrounding clearance as applicable. Check for leaks or contact, then follow the manufacturer service and reinspection schedule.
Installation Instructions
- Uses simple hand tools bolts directly to factory mounting points
- Replaces OEM airbox and tube no computer reprogramming needed
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