For Nissan 350Z Z33 SIlver-Coated Aluminum Cold Air Intake Pipe+ RU-2430 Filter Helps Engine to Draw in More and Colder Air Resulting in Better Throttle Response and Higher Explosive Horsepower Output Improves Up To 95% Filtration Efficiency, Increase 5 to 10 Horsepower, 6 to 8 Precent of Torque, and Improve the Gas Mileage 3" Diameter Piping / Filter Diameter: 3" (ID) / Flange Length: 0.625" / Height: 5" Come with Intake Pipe, Air Filter, Maf Adapter and Set of Hoses, Clamps and Mounting Hardware Fit 03-06 Nissan 350Z (Installation Instruction is NOT Included, Prefessional Installer is Hightly Recommended)