K&N Performance Cold Air Intake System: Easy Installation, Engineered to Maximize Airflow, Boost Horsepower & Torque, 57-3512

The K&N Cold Air Intake Kit 57-3512 is a high-performance, 50-state legal upgrade designed specifically for the 1999–2000 Honda Civic Si. Engineered to deliver a guaranteed increase in horsepower and acceleration, this system is dyno-tested and provides up to 50% more airflow than the restrictive factory intake. It improves throttle response and towing performance, while enhancing your Civic’s sound with a more aggressive engine tone. The system features a high-performance oiled synthetic air filter that offers world-class protection against harmful contaminants and requires no cleaning for up to 100,000 miles. With a simple bolt-on design, installation takes less than an hour using basic hand tools, and no ECU tuning is required. Backed by a 10-Year/Million Mile Limited Warranty, this K&N intake kit is a reliable and effective way to upgrade your Civic Si’s performance.

• K&N Cold Air Intake Kit: High Performance, Guaranteed to Increase Horsepower: 50-State Legal: 1999-2000 HONDA (Civic Si) 57-3512
• Ultimate Longevity: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle.
• Guaranteed Increase in Horsepower: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
• Better Towing: Improves acceleration and uphill performance when towing by improving throttle response.
• Improved Engine Sound: Hear the power under the hood.
• World Class Protection: Pushing the limits of engine protection by protecting your engine from harmful contaminants
• Easy Maintenance: No filter cleaning required for up to 100,000 miles
• Easy to Install: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.  
• Dyno Tested: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
• High Quality