| Adding an aftermarket intake system to your Sport Trac is one of the easiest and most cost effective ways to increase you Expedition's horsepower and torque. A 57 series K&N intake system will allow your engine to breathe easier resulting in more power. Better airflow means increased performance and better fuel economy. Another important feature of these intakes is their washable filter. This allows the filter to be used over and over again without having to buy a new one every 15,000 miles which is necessary when using paper filters. If your looking to add power to your Sport Trac, and get better gas mileage, a K&N 57series intake is for you. 57 Series Intake Benefits |  |
Dyno Chart |
Specifications
| Car Fitments | Model | Estimated Horsepower Gain | Weight | Length | Width | Height |
| 2001-2004 Explorer Sport Trac 4.0L | 57-2529-1 | 6.88 HP @ 5243 RPM | 8.4 lbs. | 21 in. | 12.25 in. | 12.38 in. |
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