03 04 05 06 07 08 Mazda6 2.3L L4 Green Piping Cold Air Intake System Kit with Red Filter For 2003-2008 Mazda 6 with 2.3L Engine (i Model ONLY) "WILL not fit on Mazdaspeed 6 Model" 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)