K&N Performance Cold Air Intake Kit 69-7002TTK with Lifetime Filter for Nissan Maxima 3.5L V6 Estimated horsepower gain of 13.25 HP at 5249 RPM Designed to improve throttle response and engine sound Easy to install, usually in 90 minutes or less Replaces stock air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions)