Fitment Information

• Subaru WRX GE Hatch (2008, 2009, 2010, 2011, 2012, 2013, 2014)
  
• Subaru WRX GH Sedan (2008, 2009, 2010, 2011, 2012, 2013, 2014)
  
• Subaru Impreza 2.5 GT GE Hatch / GH Sedan (2009, 2010)
  
• Subaru WRX STI GE Hatch (2008, 2009, 2010, 2011, 2012, 2013, 2014)
  
• Subaru WRX STI GH Sedan (2011, 2012, 2013, 2014)
• Subaru WRX STI VA Sedan (2015, 2016, 2017, 2018, 2019, 2020, 2021)
• Subaru WRX STI Type RA VA Sedan (2018)
• Subaru WRX STI S209 VA Sedan (2019)
• This Air Intake is compatible with USDM vehicles only

Emissions Compliance

• 50 State Legal - This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with the manufacturer's application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number:
  • Air Intake: D-660-3 / D-660-4 / D-660-102
  • Airbox: D-660-106
  • Air Intake with Airbox: D-660-77

Specs & Features

• Composite Cool: Molded from a high-tech Composite Material that rejects under-hood heat significantly better than aluminum or steel piping—keeping your intake charge cool and power consistent.
• Turbulence Free: Features a CFD-designed Velocity Stack and Airflow Straightener Grid to smooth out chaotic air before it hits the MAF sensor, ensuring perfect idle and precise tuning.
• Cold Air Feed: The included 16 Gauge Aluminum Airbox seals against the factory snorkel, pulling fresh air from outside the grill while blocking hot engine bay temps.
• Built Tough: Includes a 4-Ply Steel Reinforced Silicone post-MAF hose that won't collapse under high boost vacuum.
• Tuning Ready: Specifically designed to work with COBB Accessport OTS Maps, making it a simple "Install, Flash, and Go" upgrade without the need for a custom dyno session.

Calibration Requirement

Critical Note: You cannot just bolt this onto an 08+ Subaru and drive away. The airflow dynamics change so drastically that the factory ECU calibration can't keep up, which can run the engine dangerously lean.

Tuning is mandatory. But don't worry—COBB makes this easy. COBB provide free Off-The-Shelf (OTS) Maps via the Accessport. Just install the intake, flash the specific "Stage 1+ SF" map, and you are safe, powerful, and ready to rip.

Product Description

Metal intakes look shiny, but they act like ovens. Metal conducts heat, and under the hood of a Subaru, that means your "cold air" intake quickly becomes a heater for your turbo. The COBB Tuning SF Intake changes the game by using a Composite Body. This advanced material acts as a thermal barrier, keeping the air inside cool and dense. By pairing it with the SF Airbox, you get the best of both worlds: the short ram's snappy throttle response and induction noise, plus the isolation and cold airflow of a sealed box.

Subaru's are notoriously picky about airflow. Many aftermarket intakes cause turbulence that confuses the Mass Air Flow (MAF) sensor, leading to stumbling and check engine lights. COBB solved this with a built-in Velocity Stack and Airflow Straightener Grid. Think of it as a comb for the air—it straightens the flow so your sensor gets an accurate reading every time. This eliminates "dead spots" and ensures your car runs as smoothly as stock, just with a lot more power.

COBB Tuning doesn't just bend pipes; they engineer solutions. This intake system is the gold standard for the 2008+ Subaru platform because it addresses the three biggest issues with aftermarket intakes: heat soak, water ingestion, and poor MAF readings. It’s the smartest, safest way to let your Boxer engine breathe.