Subaru STI Engine Parts

You can never have too much chassis stiffness. Weight aside, the more the better. Chassis bracing maintains alignment angles and spring rates by gr...

DESCRIPTION The GrimmSpeed Dry-Con Air Filter is a high-performance direct-OEM replacement panel filter that has been designed to flow more air whi...

DESCRIPTION The GrimmSpeed Engine Bay Cap Set completely replaces the OEM yellow caps under the hood of all 2008-21 WRX and STI models, as well as ...

DESCRIPTION These fuel rails have the same mounting and injector spacing as the 20-0577-02. However, these fuel rails feature a 8AN ORB port machin...

DESCRIPTION The catch can draws out oil and water condensation from the crankcase gasses that would otherwise be drawn into the intake manifold. Th...

DESCRIPTION The Grimmspeed Top Mount Intercooler Y-Pipe Kit has been designed to work with factory or aftermarket top mount intercoolers. This is a...

DESCRIPTION Lightweight Batteries are an excellent and inexpensive way to remove weight from your Subaru, which has an OEM battery tipping the scal...

Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick with the PERRIN BOV/BPV. HIGH FLOW With large 1.225" inle...

Why You Want It The PERRIN Turbo Inlet Hose, made with advanced silicone technology, outperforms the OEM part with a smoother, larger interior for...

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

The GenV WG40 CompGate40 External Wastegate is a Motorsport-proven, cost-effective external wastegate – The Highest Flowing Wastegate of its kind. ...

TRANSFORM YOUR ENGINE BAY Get rid of the unattractive OEM yellow cap and upgrade your engine bay with the IAG Revolve Coolant Reservoir Cap. ...

THE IAG VA FENDER COVERS Transform your Subaru’s engine bay with the IAG VA Fender Shrouds. Designed specifically for the 2015-2021 WRX and S...

DESIGNED FOR COMFORT Designed to fit 2002-2025 WRX, 2004-2021 STI, 2004-2011 FXT and 2005-2009 LGT Subaru models, the IAG Comfort Series Pitc...

SAFEGUARD YOUR SUBARU The IAG Performance Air / Oil Separator (AOS) is a smart upgrade for your Subaru. Developed through years of meticul...

DESCRIPTION Transform your engine bay with the Mishimoto Coolant Overflow Tank for 2008-2021 STI/WRX. Stock plastic tanks are not only unsightly bu...

DESCRIPTION The Mishimoto Oil Cooler Kit for the 2015-2021 Subaru STI is designed to keep your engine cool and reliable, whether on the street or t...

DESCRIPTION Lightweight Batteries are an excellent and inexpensive way to remove weight from your Subaru, which has an OEM battery tipping the scal...

DESCRIPTION Upgrade your EJ engine bay with the GrimmSpeed Titanium Alternator Shroud for the 2002–2014 WRX and 2004–2021 STI. Designed for enthusi...

DESCRIPTION The Perrin Air Oil Separator is not a catch can. Catch cans capture engine blow-by and stores it in a container, which requires constan...

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

DESCRIPTION The GrimmSpeed Front Strut Bar for the 2015-2021 Subaru WRX/STI blends precision engineering with clean aesthetics to deliver serious p...

DESCRIPTION The GrimmSpeed StealthBox Cold Air Intake System is the result of countless invested hours in research and development to provide the p...