This intake airbox is constructed of 16 gauge aluminum, consisting of a one-piece surround, directional lid, stainless steel hardware, and all the necessary components for a seamless install with OEM quality fit and finish.

The SF Airbox adds the benefits of a cold air intake to the outstanding performance of the SF Intake. The factory inlet directs cold air from the front grill to the SF Airbox, which encloses the SF Intake. Hot engine bay air that robs horsepower is prevented from entering the intake system to provide consistent intake performance. This unique design also separates rainwater from the intake air, eliminating the water ingestion issues that plague in-fender cold air intakes.

This SF Airbox Kit includes a New Subaru OEM Air Duct that provides fresh air from behind the grill directly into the airbox. This duct is REQUIRED for compatibility with the 2018 STI Type RA and 2019 STI.

Subaru Airbox STI 2019-2021, STI Type RA 2018

• 16 Gauge Aluminum Construction
• Uses Factory Snorkel to Feed Cold Air to Airbox
• Benefits of CAI without Water Ingestion Issues
• Easy Installation
• OEM Quality Fit and Finish