K&N - E-3740

Round Air Filter

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. Stock replacement air filters for street vehicles are covered by K&N's Million-Mile Limited Warranty.

The K&N E-3740 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E-3740 is made with oiled layers of woven cotton that offer superior filtration and can be washed and reused repeatedly. K&N replacement air filters can go up to 50,000 miles before cleaning is required, depending on driving conditions. One K&N replacement air filter costs less than replacing disposable air filters over and over again. The E-3740 is simple to install and is custom designed to fit right into the factory air box of older Ford Scorpio and Peugeot models, as well as other applications.

• Designed to boost horsepower and rate of acceleration
• Can be cleaned and used again
• High air flow with exceptional filtration
• Lasts up to 50,000 miles before cleaning, depending on driving conditions
• Works with original equipment manufacturer vehicle electronics
• Emissions legal in all 50 US states
• Will NOT void vehicle warranty
• Million Mile Limited Warranty®