03 04 05 06 07 08 Mazda6 I 2.3 L4 Cold Air Intake + Red Filter CMZ3R 2003-2008 Mazda6i with 2.3L Engine (i Model ONLY) 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