Injen 03-03.5 Mazdaspeed Protege Turbo Black Cold Air Intake

This Injen RD Series cold air intake is specifically designed for your 2004 Mazda Miata. It replaces the restrictive factory airbox with a smooth, mandrel-bent aluminum tube and a high-flow air filter, aiming to let your turbo breathe easier. By pulling cooler, denser air from behind the front bumper, this intake helps your engine make more power, especially in the mid-range where you'll feel it most.

The intake tube itself is made from 6061-T6 aluminum and is bent using a mandrel process, which ensures the inside diameter stays consistent throughout the bend. This smooth path reduces turbulence and restrictions, allowing for more efficient airflow to the turbo. It includes a serviceable Injen SuperNano-Web dry air filter, which offers a large surface area for maximum airflow and good filtration. You'll also notice a more aggressive, throaty engine tone when you step on the gas.

This kit comes in a durable black powder-coated finish for a clean look in the engine bay. It's designed as a direct bolt-on installation and is CARB exempt, meaning it meets emissions requirements in California and other states that follow its standards. Injen backs this intake with a limited lifetime warranty.