Made In The USA,Donaldson Powercore Filtration Offer Maximum Protection For Use In The Harshest Environments,Includes Volant Hydrophobic Pre-Filter Designed To Protect Filter From Water Ingestion,Built From Rugged Rotomolded Crosslink Polyethylene Construction,Features Drain Port In Bottom Of Air Intake Box To Ensure Water Evacuation,Dyno Tested Gains Up To 5 Hp And 3 Lb-Ft. Of Torque,Easy Bolt-On Installation. Installs In Under 1 Hour.,Maintenance-Free,Patented Smoked Acrylic Airbox Cover That Allows For Ease Of Filtration Inspection,Significantly Increases Air Intake Tone And Turbo Whine,Volant Lifetime Warranty,No Tune Required