The COBB Gen2 Mazdaspeed3 Airbox is designed to be used along with the Mazdaspeed3 SF Intake System. The COBBGen2 Mazdaspeed Airbox will protect the intake filter from dirt and debris as well as heat radiating from the engine. While still utilizing the OEM air induction system that fed into the factory air box. To make sure intake temps are as close to ambient as possible. Plus, a wrinkle black powder coat finish and riveted COBB SF nameplate keep the engine bay looking nice and tidy.