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The K&N 77-2556KP delivers guaranteed horsepower and torque gains for 2004-2008 Ford F-150 5.4L V8 trucks, 2005 Ford Expedition 5.4L V8 SUVs, and 2006-2008 Lincoln Mark LT 5.4L V8 pickups. This mandrel-bent aluminum cold air intake system pairs with a washable high-flow oiled cotton air filter for increased airflow and filtration. Installation replaces the factory air filter and intake tube in 60 minutes or less using basic hand tools.
Key Features
- High Airflow Design: Mandrel-bent aluminum intake tube and oversized oiled cotton filter allow more air into the engine for power gains.
- Reusable Filter: Washable high-flow air filter cleans every 100000 miles under normal highway driving to maintain performance long-term.
- Easy Bolt-On: Direct replacement for stock components with no vehicle modifications needed.
- Includes all necessary hardware and clamps for direct bolt-on fit.
- Mandrel-bent aluminum tube for durability and smooth airflow, paired with oiled cotton gauze filter media for high flow and dust protection.
- Filter service interval is every 100000 miles under normal conditions, using K&N cleaning kit.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2005 | Ford | Expedition | Eddie Bauer, Limited, XLS, XLT |
| 2004-2008 | Ford | F-150 | FX2, FX4, Harley-Davidson Edition, King Ranch, Limited, THE 60TH ANNIVERSARY EDITION, XL, XLT |
| 2006-2008 | Lincoln | Mark LT | Verify engine and application notes |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 77-2556KP |
| 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 77-2556KP. 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 77-2556KP 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 77-2556KP 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 77-2556KP?
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
- Completes in 60 minutes or less with basic hand tools like screwdriver and pliers.
- Includes all necessary hardware and clamps for direct bolt-on fit.
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