57-2573) that is street legal in 50 states for the 2006, 2007 and 2008 Ford Explorer with 4.6 liter V8 engine. K&N dynamometer testing shows an estimated gain of 11 horsepower at 4500 rpm.
57-2573 K&N air intake system installed in 2006 Ford Explorer
Dyno chart for 2006-2008 Ford Explorer4.6 liter engine with K&N air intake system
To immediately see the benefits of a K&N air intake system, simply replace the Explorer’s original intake assembly with the 57-2573. Cooler outside air is drawn through a washable and reusable K&N chrome top air filter (RF-1048) for more power and filtering capacity.
A powder coated steel heat shield replaces the stock air box and protects the K&N air filter while isolating it from engine heat. The 57-2573 uses the OE Mass Airflow Sensor. Although the MAF is re-positioned to gain the benefits of additional horsepower, no computer programming is required.
The K&N air intake system can be installed in 90 minutes or less with simple hand tools and comes with the famous K&N Million Mile Limited Warranty.
Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.