Subaru STI Engine Parts

EMISSIONS This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results)...

AG PTFE FUEL SYSTEM KIT W/ AEROMOTIVE FPR, IAG FUEL RAILS FOR 08-14 WRX, 08-21 STI FUEL DELIVERY MADE EASY When designing the IA...

Best TMIC on the market! Extreme Turbo Systems has designed a direct bolt on top mount intercooler for the 08-21 Subaru STI. This intercooler featu...

OVERTAKE Downpipe Hardware Kit | Ditch your rusted hardware! If you've ever removed the downpipe from your Subaru, you know that the hardware can g...

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...

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 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...

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...

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 t...

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...

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 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...

Overtake Turbo to Downpipe Gasket | Be Done With Leaks Looking for a Subaru gasket that won't leak? We get it – finding a high-quality gasket for y...

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

Description The COBB Turbo Blanket is designed to limit the amount of heat that is transferred from your turbocharger to your engine bay as wel...

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 the ...

IAG 550 EJ25 2.5L SUBARU SHORT BLOCK DESIGNED FOR STRENGTH The IAG 550 Short Block is designed for modified EJ25 Subarus that n...

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...

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...