AEM 21-640C Cold Air Intake System for 2006-2009 Mazda MX-5 / Miata

Vehicle Fitment

• 2006-2009 Mazda MX-5 / Miata (2.0 L I4)

Features

• Dyno-tested cold air intake design for improved horsepower and torque
• Mandrel-bent aluminum tubing with a durable gunmetal-gray powder-coat finish
• AEM DryFlow synthetic air filter (oil-free) for high flow and long service life
• Filter placement relocated inside front bumper for cooler intake air
• Low restriction design ensures smooth airflow and engine response
• Washable and reusable filter media - long maintenance intervals
• Comes with all required clamps and mounting hardware
• AEM Lifetime Limited Warranty included

Specifications

• Part Number: 21-640C
• Replacement Filter: 21-203DK
• Filter Material: Non-woven synthetic (DryFlow)
• Air Tube Material: Aluminum
• Finish: Gunmetal Gray
• Weight: ~7 lb (3.2 kg)
• CARB EO Number: D-670-15 (50-state legal in many setups)

Included Components

• 1 x Aluminum intake tube
• 1 x DryFlow synthetic air filter
• 3 x Steel clamps
• Mounting bracket + hardware
• Installation instructions

Product Description

The **AEM 21-640C** is a performance cold air intake system tailored for 2006-2009 Mazda MX-5 / Miata models. Designed to replace restrictive factory intake components, this system improves airflow, enhances throttle response, and helps boost both horsepower and torque.

Its mandrel-bent aluminum tubing comes with a durable gunmetal-gray powder coating, giving it both strength and style. The kit uses an oversized AEM DryFlow synthetic air filter - oil-free, washable, and designed to last up to 100,000 miles (depending on conditions) before cleaning is needed.

By relocating the filter to within the front bumper, AEM lowers intake air temperatures for denser air and more efficient combustion. Installation is straightforward with included hardware, and the system backs its quality with AEM's Lifetime Limited Warranty.