Impreza WRX STi

TUNING REQUIRED!! Please download the appropriate Off The Shelf Map for your vehicle or contact your Protuner in order to safely utilize this part! The COBB 3-Port Boost Solenoid (BCS) is an...

This is the same Coolant Overflow Tank + Washer Reservoir filler combo that is included with our 2004-2007 WRX and STI Front Mount Intercooler Kits. As a stand-alone item it helps to clean up the...

These are the pipes that connect the turbocharger compressor to the passenger side of the COBB FMIC Core. Available separately for those who may be putting together a custom turbocharger...

These are the pipes that connect the throttle body to the driver's side end tank on the COBB Front Mount Intercooler Core. A perfect solution for customers using a rotated turbocharger setup but...

This is a core-only option for those looking to increase the cooling capacity of their 2004-2007 WRX or STI in situations where piping already exists or needs to be custom-routed. Subaru Front Mount...

This is a core-only option for those looking to increase the cooling capacity of their 2004-2007 WRX or STI in situations where piping already exists or needs to be custom-routed. Subaru Front Mount...

Remove the overworked factory intercooler from your 2004-2007 WRX or STI in favor of the Silver COBB Front Mount Intercooler Kit. Featuring a massive 30" x 10.35" x 3.5" Bar and Plate core and 2.5"...

Taken your throttle body coupler off one too many times? Has it seen better days? Why not add a little flair to your engine bay with the new COBB Throttle Body coupler? It's a drop-in replacement for...

The 4-ply silicone construction has the right compliance to bridge the chassis mounted airbox to the violent motion of a boxer engine being driven in anger, while the steel reinforcement prevents...

The C.A.R.B. Certified SF Air Box 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,...

Increased Power The C.A.R.B certified COBB Tuning SF Intake removes a pre-turbo restriction in the stock intake system. The SF Intake intake system utilizes several unique features in an effort to...

This C.A.R.B. approved intake and integrated airbox looks great and has the combined benefits of a short ram intake and a cold air intake without any of the negatives. This system utilizes several...