Subaru STI Engine Parts

DESCRIPTION We decided on a subtle design for this cover that mimics the “vent” styling on our matching GrimmSpeed Alternator Cover. Is it made fro...

DESCRIPTION To help keep chassis deflection at bay and to keep any large dents out of your front fascia we’re offering the GrimmSpeed Bumper Bar as...

This kit is designed to be the best AOS on the market. It is a triple pass system with carefully designed diameters and cross sect...

DESCRIPTION This is the Grimmspeed Splitter that is available for separate purchase. This particular splitter comes with the Grimmspeed Top Mount I...

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. DESCRIPTION The Blouch Dominator 1.5XT-R Ball Bearin...

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 This replacement filter can be used for the following intake system.Subaru Redline Carbon Fiber Intake 2015-2020 STI Why? The...

Emissions 50 State Legal. This part is legal for sale and use on Emissions Controlled Vehicles in all 50 states when used in accordance with th...

COMPLETE COMPETITION SERIES PACKAGE IAG now offers our V2 Oil Pickup, Competition Series Baffle and Windage Tray combined with our Competition Oil ...

DESCRIPTION These are the GrimmSpeed TGV to Engine Gaskets. If you need to replace your OEM gaskets, then the GrimmSpeed units make for a quality r...

IAG PTFE FLEX FUEL SYSTEM KIT W/ ID INJECTORS, AEROMOTIVE FPR, IAG FUEL RAILS FOR 2008-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY ...

DESCRIPTION This is the GrimmSpeed Air Oil Separator. If you're familiar with modifying your vehicle, then you will know the importance of an air/o...

This is handmade here in the USA at Extreme Turbo Systems. This will bolt up with a 3.0"-4.0" ETS intercooler and requires no additional trimming o...

The ETS Cold Air Intake locates the filter in the fender well out of the engine bay. This makes for not only the coldest air possible but the most ...

Overtake Bypass Valve Recirculation Hose | High-Performance Silicone Upgrade Looking to replace your worn-out Bypass Valve Recirculation Hose or ad...

DESCRIPTION Torque Solution Cylinder 4 Coolant Mod for Subaru EJ Engines was designed to increase coolant flow to cylinder #4 head area. The additi...

DESCRIPTION It’s inevitable, you’ll eventually want to replace your OEM Subaru oil cap. Whether it's leaking, worn out, or just an eyesore, the Gri...

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

DESCRIPTION Upgrade your Subaru’s performance with the GrimmSpeed Engine Mount for the 2002+ WRX and 2004+ STI. Designed as a direct replacement fo...

DESCRIPTION The Fuel Injector Clinic 1000cc Top Feed Injectors for the 2002-2014 WRX and 2007-2021 STI provide the fuel capacity needed for moderat...

Description The COBB Redline Gloss Carbon Fiber Fender Shrouds for the VA WRX are constructed of hand-laid 2x2 twill weave carbon fiber sheets. A...

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

DESCRIPTION The GrimmSpeed Radiator Shroud for the 2015-2021 Subaru WRX/STI is made from CNC laser cut and bent aluminum and covered in a very dura...

Description The COBB Delrin Oil Cap's construction of pure medical-grade black Delrin means it does not absorb heat like many aluminum options....

DESCRIPTION The GrimmSpeed Air/Oil Separator for turbocharged Subaru models has a unique design that allows you to maintain your PCV Valve while se...