Skip to content
MARCH MADNESS SAVINGS ARE ON!
MARCH MADNESS SAVINGS ARE ON!

Subaru STI Engine Parts

COBB Tuning Coolant Overflow Tank 2015-2021 WRX/STI

Original price $290.00 - Original price $290.00
Original price
$290.00
$290.00 - $290.00
Current price $290.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION The OEM Coolant...

View full details

CSF 2-Row Aluminum Radiator 2008-2021 WRX / 2008-2021 STI

Original price $479.00
Original price $479.00 - Original price $479.00
Original price $479.00
Current price $455.00
$455.00 - $455.00
Current price $455.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION CSF uses new te...

View full details

Perrin Engine Mount Kit 2002+ WRX / 2004-2021 STI

Original price $369.00
Original price $369.00 - Original price $369.00
Original price $369.00
Current price $313.65
$313.65 - $313.65
Current price $313.65

Perrin Engine Mount Kit 2002-2021 WRX/STI OVERVIEW PERRIN Engine Mounts reduce motor movements, efficiently transmit motor power and give drivers ...

View full details

Injector Dynamics 1750cc Fuel Injectors 2002-2014 WRX / 2007-2021 STI

Original price $1,339.80 - Original price $1,339.80
Original price
$1,339.80
$1,339.80 - $1,339.80
Current price $1,339.80

The Injector Dynamics ID1750-XDS fuel injectors are a high-flow, top-feed injector set built for Subaru owners who need serious fueling headroom fo...

View full details

Forced Performance Black Turbocharger 2002-2007 WRX / 2004-2021 STI

Original price $1,629.00 - Original price $2,046.00
Original price
$1,629.00 - $2,046.00
$1,629.00 - $2,046.00
Current price $1,629.00

FP Black HTZ Compressor wheel - 82HTZ Flow rating - 71LB per minute CW Measurements - 59.1MM Inducer / 82MM Exducer TW Measurements - 67.3MM ...

View full details

GrimmSpeed Titanium 1.3 Bar Radiator Cap

Original price $41.00
Original price $41.00 - Original price $41.00
Original price $41.00
Current price $34.85
$34.85 - $34.85
Current price $34.85

DESCRIPTION Upgrade your cooling system with the GrimmSpeed Titanium Radiator Cap, rated at 1.3 bar for improved thermal control and reliability. B...

View full details

GrimmSpeed Street Transmission Mount 2002+ WRX / 2004-2021 STI

Original price $249.00
Original price $249.00 - Original price $249.00
Original price $249.00
Current price $211.65
$211.65 - $211.65
Current price $211.65

The ALL NEW GrimmSpeed Transmission Mounts are designed to lock down your Subaru's drivetrain and enhance the driving experience, while keeping cab...

View full details

GrimmSpeed Street Pitch Stop Mount 2002+ WRX / 2004-2021 STI

Original price $109.00
Original price $109.00 - Original price $109.00
Original price $109.00
Current price $92.65
$92.65 - $92.65
Current price $92.65

DESCRIPTION This is the GrimmSpeed Pitch Stop Mount. This pitch stop mount is a dramatic improvement over the factory mount which is made from flex...

View full details

Process West Black Intake Manifold Street Version 2002-2014 WRX / 2004-2021 STI

Original price $2,333.00 - Original price $2,333.00
Original price
$2,333.00
$2,333.00 - $2,333.00
Current price $2,333.00

The Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX/STI when perfect aesthetics ...

View full details

COBB Tuning SF Intake + Airbox 2019-2021 STI

Original price $575.00 - Original price $575.00
Original price
$575.00
$575.00 - $575.00
Current price $575.00

DESCRIPTION Setting the standard for MAF style intakes with a velocity stack, airflow straighteners and composite body for ultimate performa...

View full details

COBB Tuning Fuel Rails/Line Kit Package 2008-2021 STI

Original price $775.00 - Original price $775.00
Original price
$775.00
$775.00 - $775.00
Current price $775.00

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

View full details

COBB Tuning Fuel System Package 2008-2021 STI

Original price $1,825.00 - Original price $1,825.00
Original price
$1,825.00
$1,825.00 - $1,825.00
Current price $1,825.00

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

View full details

COBB Tuning Turbo Heatshield 2002-2007 WRX / 2004-2021 STI

Original price $99.00 - Original price $99.00
Original price
$99.00
$99.00 - $99.00
Current price $99.00

DESCRIPTION The COBB Tuning Stainless Steel Heat Shield is an attractive direct replacement for the unsightly factory piece. This turbo heat shie...

View full details

IAG PTFE Fuel System Kit w/ Aeromotive FPR, IAG Fuel Rails 2008-2014 WRX / 2008-2021 STI

Original price $1,099.99
Original price $1,099.99 - Original price $1,099.99
Original price $1,099.99
Current price $934.99
$934.99 - $934.99
Current price $934.99

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...

View full details

Perrin 2.4" Turbo Inlet Hose 2002-2007 WRX/ 2004-2021 STI

Original price $333.00
Original price $333.00 - Original price $333.00
Original price $333.00
Current price $283.05
$283.05 - $283.05
Current price $283.05

ETS Top Mount Intercooler 2008-2021 STI

Original price $695.00 - Original price $895.00
Original price
$695.00 - $895.00
$695.00 - $895.00
Current price $695.00

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...

View full details

COBB Tuning SF Intake Replacement Filter 2002-2014 WRX / 2004-2021 STI

Original price $65.00 - Original price $65.00
Original price
$65.00
$65.00 - $65.00
Current price $65.00

DESCRIPTION The filter element that originally came with your SF Intake is cleanable and can be reused for the life of your car. However, should...

View full details

Revel GT Dry Carbon Fuse Box Cover 2008-2021 WRX/STI

Original price $145.00
Original price $145.00 - Original price $145.00
Original price $145.00
Current price $137.75
$137.75 - $137.75
Current price $137.75

ENHANCE INTERIOR Enhance the look of the interior with perfectly fitted dry carbon overlays. Using various methods of extensive testing for eac...

View full details

GrimmSpeed Front Mount Intercooler Bumper Bar 2015-2021 WRX/STI

Original price $219.00
Original price $219.00 - Original price $219.00
Original price $219.00
Current price $186.15
$186.15 - $186.15
Current price $186.15

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...

View full details

IAG Silver Street Series Oil Pan Package 2002-2014 WRX / 2004-2021 STI

Original price $699.99
Original price $699.99 - Original price $699.99
Original price $699.99
Current price $594.99
$594.99 - $594.99
Current price $594.99

IAG offers our V2 Oil Pickup, Street Series Baffle and Windage Tray combined with our New Oil Pan as a complete package.About Street Series EJ Oil ...

View full details

Radium Master Cylinder Brace 2015-2021 WRX/STI

Original price $94.95 - Original price $94.95
Original price
$94.95
$94.95 - $94.95
Current price $94.95

This Radium Engineering master cylinder brace is compatible with the left hand drive (LHD) 15-21 Subaru WRX, 15-21 Subaru WRX STi, and 14-18 Forest...

View full details

Perrin Red Cold Air Intake 2018-2021 STI

Original price $315.00
Original price $315.00 - Original price $315.00
Original price $315.00
Current price $267.75
$267.75 - $267.75
Current price $267.75

SPECS: Capable of adding 15-30 WHP depending on tune and supporting modifications Intakes are constructed from aluminum tubing which is precision ...

View full details

CSF 2-Row Black Radiator 2008-2021 WRX / 2008-2021 STI

Original price $479.00
Original price $479.00 - Original price $479.00
Original price $479.00
Current price $455.00
$455.00 - $455.00
Current price $455.00

SPECS: 100% all-aluminum TIG-welded construction New black finish to provide a cleaner look Includes CNC-machined mounting brackets 2-row 42mm ult...

View full details

FactionFab Subaru Pitch Stop Mount 2002+ WRX/STI

Original price $120.00 - Original price $120.00
Original price
$120.00
$120.00 - $120.00
Current price $120.00

DESCRIPTION The Faction Fab Billet Aluminum Pitch Stop features a unique design that eliminates front to back engine movement while eliminating the...

View full details

Blouch Dominator 1.5XT-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

Original price $1,996.50 - Original price $2,096.50
Original price
$1,996.50 - $2,096.50
$1,996.50 - $2,096.50
Current price $1,996.50

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

View full details

Perrin Hella Horn Bracket 2015-2021 WRX / 2015-2021 STI

Original price $56.00
Original price $56.00 - Original price $56.00
Original price $56.00
Current price $47.60
$47.60 - $47.60
Current price $47.60

DESCRIPTION The Perrin Brackets for HELLA Horns are designed for a perfect fit. Tailored for specific models makes for a better fit than competitor...

View full details

COBB Tuning Fuel Pressure Sensor Kit (5 PIN) 2015-2021 STI

Original price $275.00 - Original price $275.00
Original price
$275.00
$275.00 - $275.00
Current price $275.00

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 ...

View full details

COBB Tuning Silicone Radiator Hoses 2008-2014 WRX / 2008-2021 STI

Original price $120.00 - Original price $120.00
Original price
$120.00
$120.00 - $120.00
Current price $120.00

EMISSIONS This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION Replace your ol...

View full details

Perrin Neon Yellow Radiator Shroud 2015-2021 WRX / 2015-2021 STI

Original price $140.00 - Original price $215.00
Original price $140.00 - Original price $215.00
Original price $140.00
$119.00 - $182.75
$119.00 - $182.75
Current price $119.00

The PERRIN Radiator Shroud caps the top of the radiator for a sleek, clean, and accented new look. DESIGN Dress up the top of your radiator with t...

View full details

IBR Air Oil Separator 2002-2007 WRX / 2004-2021 STI

Original price $329.99 - Original price $329.99
Original price
$329.99
$329.99 - $329.99
Current price $329.99

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...

View full details

GrimmSpeed Top Mount Intercooler Splitter 2015-2021 STI

Original price $255.00
Original price $255.00 - Original price $255.00
Original price $255.00
Current price $216.75
$216.75 - $216.75
Current price $216.75

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

View full details

Perrin Panel Filter 2002+ WRX / 2004-2021 STI

Original price $67.00 - Original price $76.00
Original price $67.00 - Original price $76.00
Original price $67.00
$56.95 - $64.60
$56.95 - $64.60
Current price $56.95

The PERRIN High Flow Washable Replacement Air Filter is the last filter you will ever need to buy. Not only is it washable, but it will increase ho...

View full details

Whiteline Pitch Stop Mount 2002+ WRX / 2004-2021 STI

Original price $145.88
Original price $145.88 - Original price $145.88
Original price $145.88
Current price $109.41
$109.41 - $109.41
Current price $109.41

Subaru designed the pitch stop mount to assist in controlling the engine and drivetrain forward and aft twisting motion. The pitch stop is inheren...

View full details

COBB Tuning Air Filter Cleaning Kit - Clear

Original price $25.00 - Original price $25.00
Original price
$25.00
$25.00 - $25.00
Current price $25.00

Description The COBB Universal Air Filter Cleaning Kit includes everything needed to bring new life back into your COBB SF Intake filter or High ...

View full details

Perrin Black Battery Tie Down 2002+ WRX / 2004-2021 STI

Original price $82.00
Original price $82.00 - Original price $82.00
Original price $82.00
Current price $69.70
$69.70 - $69.70
Current price $69.70

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

View full details

Perrin Red Battery Tie Down 2002+ WRX / 2004-2021 STI

Original price $82.00
Original price $82.00 - Original price $82.00
Original price $82.00
Current price $69.70
$69.70 - $69.70
Current price $69.70

DESCRIPTION The Perrin Battery Tie Down is a quick and affordable upgrade for your Subaru. Batteries are essential for many of your vehicles functi...

View full details

Your Subaru STI was built for excitement, but why settle for stock when you can achieve so much more? WRXDaily’s premium Subaru STI engine parts help you unlock the raw potential of your car. Turn your track days or daily drives into unbeatable experiences.

Whether you’re aiming for peak efficiency or high-octane power, our Subaru WRX STI engine upgrades deliver solutions tailored to your goals. For even greater customization, explore our range of Subaru STI aftermarket performance parts crafted to elevate every aspect of your engine’s performance.

Every part we offer is precision-engineered for seamless integration and maximum impact. From reliable endurance to thrilling power gains, these parts are made to perform. Don’t wait to transform your Subaru into the ultimate performance machine; start your build with WRXDaily’s expertly crafted parts today.