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The K&N 57-2550 Performance Air Intake System replaces the factory air filter and intake tube on 1997-2004 Ford F-150 models with 4.2L V6 engines. This system uses a roto-molded HDPE tube to deliver more airflow for gains in horsepower and torque plus a washable high-flow oiled cotton filter. A custom heat shield keeps hot engine bay air away while allowing simple installation in under 60 minutes with basic hand tools.
Key Features
- High-Flow Air Filter: Oversized conical oiled cotton design cleans every 100000 miles under highway conditions for long-lasting performance.
- Roto-Molded HDPE Tube: Increases intake volume and airflow to the engine for measurable power gains.
- Custom Heat Shield: Blocks underhood heat to provide cooler denser intake air.
- Ships in protective box 23 x 13.25 x 9.75 inches product weight 8.8 lbs.
- Roto-molded high-density polyethylene HDPE tube paired with oiled cotton filter media for durability and flow.
- Replaces OE air filter and intake tube directly.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1997-2004 | Ford | F-150 | Verify engine and application notes |
Specifications
| Brand | K&N Engineering |
|---|---|
| Manufacturer Part Number | 57-2550 |
| 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 57-2550. 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.
Related K&N Engineering Products
- Shop all K&N Engineering products
- K&N 97-04 Ford F-150 V8-4.6L/5.4L High Flow Performance Kit
- K&N 01-04 Ford Explorer V6-4.0L SOHC Performance Intake Kit
- K&N 04 Ford Ranger / Mazda B4000 V6-4.0L Performance Intake Kit
Frequently Asked Questions
How do I confirm K&N 57-2550 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 57-2550 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 57-2550?
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 basic hand tools completes in 60 minutes or less
- Compatible with factory hardware no modifications required
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