SKU: B724100-BL | UPC: 799928865340
Cobb Subaru SF Intake System – COBB Blue for 2002-2007 Impreza WRX & 2004-2021 WRX STI
The COBB SF Intake System in COBB Blue replaces the factory airbox on 2002-2007 Subaru Impreza WRX and 2004-2021 WRX STI models with a high-flow assembly for increased horsepower and torque. Its large-diameter tubing and oversized filter pull in more air while the heat shield keeps intake temps low for denser air charge and better throttle response. Dyno results show gains up to 15 whp and 18 ft-lbs across the powerband without triggering check engine lights.
Key Features
- Oversized Dry Double-Cone Filter: Synthetic media flows 200% more air than stock while trapping 99% of contaminants; reusable, no oil required for easy maintenance.
- 3-Inch Mandrel-Bent Aluminum Pipe: Smooth interior walls minimize turbulence and restrictions, directing high-velocity air straight to the turbo for quicker spool and power.
- Steel Heat Shield: Powder-coated design with strategic openings blocks engine bay heat, ensuring cooler intake air for consistent performance gains.
- High-Quality Silicone Couplers & Stainless Clamps: Secure, flexible connections withstand boost pressure and heat cycles for reliable seal over time.
- Complete Bolt-On Design: Direct fit with factory mounting points; retains MAF sensor accuracy and supports stock or tuned setups.
Product Notes
- EPA compliant for all 50 states with no emissions impact or required tuning.
- Filter service interval every 15,000 miles using COBB filter cleaning kit.
Installation Notes
- Professional installation recommended.
- 30-60 minute install using basic hand tools remove factory airbox and box.
- Includes all hardware and brackets for direct compatibility with OEM components.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2021 | Subaru | WRX STI | All |
Why Choose COBB?
- Subaru tuning pioneer since 1998 with millions of parts on the road.
- In-house dyno development ensures real-world power gains on EJ20/EJ25 engines.
- Precision engineering from COBB’s Colorado facility for exact fit and durability.
Frequently Asked Questions
- Q: Will this fit my 2010 STI?
A: Yes, compatible with all 2004-2021 USDM WRX STI models including sedan and hatchback variants. - Q: What material is used for the intake pipe and filter?
A: Mandrel-bent aluminum pipe with powder-coated steel heat shield; filter uses dry synthetic cotton gauze media. - Q: Does installation require ECU tuning or cause check engine lights?
A: No tuning needed and no CEL, designed to work with factory ECU or COBB Accessport for further gains.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure single box measuring 28″ x 14″ x 10″
- Weight: 7.6 lbs product / 11 lbs shipping
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