02 03 04 05 06 Nissan Altima 2.5 L4 Cold Air Intake + Blue Filter CNS3B 2002-2006 Nissan Altima with 2.5L 4-cylinders Engine (Base/S/SL) Automatic & Manual Transmission It's the ultimate performance Cold Air intake Kit This air intake kit will increase 7-10% of Horsepower and 5-8% of Torque Easy to install and easy to fit with simple tools No additional parts will be needed for installation after you purchase this kit