K&N's lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. This air filter with air box is designed to replace your existing factory air box and air filter. This replacement air filter and air box are street legal in all 50 states and are covered by our famous K&N Million-Mile Limited Warranty.. K&N's lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. This air filter with air box is designed to replace your existing factory air box and air filter. This replacement air filter and air box are covered by our famous K&N No-Hassle Lifetime Limited Warranty.. K&N's lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. This air filter with air box is designed to replace your existing factory air box and filter.. FORD F-SERIES V8-6.0L DSL; 2003-2007-REPLACEMENT AIRBOX. K&N Replacement Air Filter FORD 6.0L REPLACEMENT AIRBOX. K&N No-Hassle Lifetime Limited Warranty. Engine Air Intake and Air Box Kit. Million Mile Limited Warranty. Replacement Airbox

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