Subaru STI Engine Parts

NO MORE DRIVETRAIN SLOP The IAG Race Series Pitch Stop Mount offers a solid solution for reducing engine and transmission movement under hard...

NO MORE DRIVETRAIN SLOP The IAG Competition Series Pitch Stop Mount offers a solid solution for reducing engine and transmission movement und...

The IAG Street Series Pitch Stop Mount reduces engine and transmission movement under hard acceleration. The CNC machined billet aluminum mount in...

Introducing the AMS Performance Subaru Billet Engine Oil Dip Stick, the perfect addition to enhance the look and functionality of your engine bay. ...

HIGHER CAPACITY The IAG Performance EJ Street Series Oil Pan for the Subaru WRX, STI, LGT and FXT features a unique design and is precisi...

DESCRIPTION Upgrade your cooling system with the Mishimoto Aluminum Coolant Expansion Tank for the 2002-2007 Subaru WRX and 2004-2016 STI. Designed...

DESCRIPTION: Liquid Chill Synthetic Engine Coolant technology combines an inherently nontoxic propylene glycol base with unique poly organic addit...

DESCRIPTION: Mishimoto Liquid Chill® radiator coolant additive is a simple yet effective way to reduce engine temperatures. This additive is compa...

DESCRIPTION: Liquid Chill Synthetic Engine Coolant technology combines an inherently nontoxic propylene glycol base with unique poly organic additi...

DESCRIPTION The pinch weld jack points are easily bent and damaged during routine tasks like tire changes and car maintaince. This damage occurs fr...

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

DESCRIPTION The GrimmSpeed Head Gaskets feature a multi-layer steel (MLS) construction, in which multiple grades are used to provide optimal surfac...

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

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 Turbo Blanket is a must-have upgrade for 2001-2014 Subaru WRX and 2004-2017 STI owners seeking to reduce engine bay heat ...

DESCRIPTION The Mishimoto Performance Direct-Fit Top-Mount Intercooler for the 2008-2021 Subaru WRX STI is designed to reduce intake temperatures a...

DESCRIPTION The Mishimoto Performance Direct-Fit Top-Mount Intercooler for the 2008-2021 Subaru WRX STI is designed to reduce intake temperatures a...

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 The GrimmSpeed Titanium Radiator Shroud for the 2015–2021 WRX and STI transforms one of the most visible areas of the engine bay into a...

DESCRIPTION Maximize engine bay space and cooling efficiency with the Mishimoto Plug-N-Play Aluminum Fan Shroud Kit for Subaru WRX/STI. Designed to...

DESCRIPTION Maximize engine bay space and cooling efficiency with the Mishimoto Plug-N-Play Aluminum Fan Shroud Kit for Subaru WRX/STI. Designed to...

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

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 Keep your 2008-2014 Subaru WRX or 2008-2021 STI cool and protected with the Mishimoto X-Line Performance Aluminum Radiator. Featuring a...

DESCRIPTION Upgrade your 2015–2021 Subaru WRX or STI engine bay with GrimmSpeed Titanium Fender Shrouds. These precision-crafted titanium panels re...