02 03 04 05 06 Nissan Altima 2.5L L4 GREEN Piping Cold Air Intake System Kit with Blue Filter For 2002-2006 Nissan Altima with 2.5L 4-cylinders Engine (Base/S/SL) Fits Automatic & Manual Transmission This Cold air intake kit will increase 7-10% of Horsepower and 5-8% of Torque It's the ultimate performance Cold Air intake Kit with higher explosive horsepower output Easy to install and easy to fit with simple tools (A General Installation instruction is included)