










K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Towing: Compatible with 2004-2008 FORD/LINCOLN: Expedition, F150, Mark LT, 57-2556
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K&N Cold Air Intake System (57-2556) is a premium vehicle-specific replacement ram air kit engineered to increase airflow, horsepower and towing performance for 2004–2008 Ford/Lincoln vehicles including F150, Expedition and Mark LT. Proudly designed and manufactured in the USA, the kit features a high-flow intake tube, custom heat shield and an oversized washable high-flow cotton air filter that is dyno-tested to deliver measurable gains in horsepower and torque. The system replaces the restrictive OEM airbox, improves throttle response and engine sound, and is ideal for daily driving and towing applications. The kit includes all necessary hardware and detailed step-by-step instructions for a typical install time of about 60 minutes. Backed by K&N’s No-Hassle Lifetime Limited Warranty. Product dimensions (packaged): 18"L x 18"W x 12"H. Product weight (manufacturer listing): 6.34 Kilograms (approx. 13.98 pounds). ProductDatabase measurements: Height 12.29, Width 18.00, Length 19.00, Weight 16.0000 (as recorded in ProductDatabase).
- GUARANTEED INCREASE IN HORSEPOWER & TORQUE: K&N cold air intake systems provide a less restrictive path for airflow, increasing the volume of cool, oxygen-rich air into your engine.
- DYNO TESTING YOU CAN TRUST: K&N air intake horsepower/torque testing is performed on wheel-based dynamometers and the reports are included with each intake system.
- MADE IN THE USA: Proudly made in the USA for trusted quality & reliability and backed by US based customer support.
- EASY TO INSTALL: Includes detailed, step-by-step instructions & all necessary parts- the entire air intake system can typically be installed in less than 60 minutes with basic hand tools.
- HIGH-FLOW REUSABLE AIR FILTER: 4 layers of pleated, breathable cotton with K&N’s red filter oil to absorb dirt & dust particles, allowing clean air to continue flowing into your engine, only needs cleaning every 100k miles under normal highway conditions.
- PREMIUM ENGINE PROTECTION FROM A TRUSTED BRAND: K&N air intake will not void manufacturer vehicle warranty & No-Hassle Lifetime Limited Warranty protects for the life of your vehicle.
- BETTER TOWING: K&N Air intake kit improves acceleration and uphill performance when towing by improving throttle response, overall horsepower and torque. Excellent for daily and highway driving.
- IMPROVED ENGINE SOUND - HEAR THE GROWL: K&N’s intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed.
Specifications:
| Materials & Construction | |
| Material | High-flow cotton filter media |
| Product Details | |
| Fit Type | Vehicle Specific Fit |
| GTIN | 024844109507 |
| Included Components | air intake filter & warranty card |
| Manufacturer Warranty Description | limited warranty |
| Product Grade | Replacement Part |
| Shape | Oblong |
| Unit Count | 1.0 Count |
| Sizing & Dimensions | |
| Height | 12 inches |
| Length | 18 inches |
| Product Dimensions | 18"L x 18"W x 12"H |
| Size | 18 x 18 x 12 inches |
| Weight | 13.98 pounds |
| Width | 18 inches |
| Technical Specifications | |
| Manufacturer Warranty Description | limited warranty |
| Unit Count | 1.0 Count |


