Skip to content

Subaru STI Engine Parts

COBB Redline Carbon Fiber Intake 2015-2021 STI

$875.00
$875.00 - $875.00
Current price $875.00
Original price $875.00 - Original price $875.00
Original price

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...

View full details

COBB Radiator Shroud 2015-2021 WRX / 2015-2021 STI

$125.00
$125.00 - $125.00
Current price $125.00
Original price $125.00 - Original price $125.00
Original price

Description This radiator shroud is made from 5052-H32 Aluminum, powder coated black and features a laser etched COBB logo. NOTE: Not compatibl...

View full details

COBB 20G Turbocharger 2008-2021 STI

$1,470.00
$1,470.00 - $1,470.00
Current price $1,470.00
Original price $1,470.00 - Original price $1,470.00
Original price

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...

View full details

Perrin Hyper Pink Radiator Shroud 2015-2021 WRX / 2015-2021 STI

$105.00 - $161.25
$105.00 - $161.25
Current price $105.00
Original price $140.00 - Original price $215.00
Original price $140.00 - Original price $215.00
Original price $140.00

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

Perrin Pitch Stop Brace 2015-2021 WRX / 2015-2021 STI

Current price $264.00
$264.00 - $264.00
Current price $264.00
Original price $352.00
Original price $352.00 - Original price $352.00
Original price $352.00

The OEM Subaru pitch stop brackets fail over time. Help prevent this failure with the PERRIN Pitch Stop Brace.  THE PROBLEM WITH THE OEM PITCH STO...

View full details

APR Performance Carbon Fiber Alternator Cover 2008-2014 WRX / 2008-2021 STI

Current price $130.90
$130.90 - $130.90
Current price $130.90
Original price $154.00
Original price $154.00 - Original price $154.00
Original price $154.00

Dress-up the engine bay with carbon fiber, molded to precise dimensions that only pre-preg. materials can achieve.  These parts are exotic-looking,...

View full details

ETS Titanium Intake Kit 2015-2021 STI

$495.00
$495.00 - $495.00
Current price $495.00
Original price $495.00 - Original price $495.00
Original price

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 ...

View full details

Perrin Pink Strut Tower Brace 2015-2021 WRX / STI

Current price $249.75
$249.75 - $249.75
Current price $249.75
Original price $333.00
Original price $333.00 - Original price $333.00
Original price $333.00

Performance During cornering, the Perrin Strut Tower Brace improves chassis rigidity, enhances steering precision under high load conditions, and r...

View full details

Radium TGV to Head Gasket 2002-2014 WRX / 2004-2021 STI

Current price $8.50
$8.50 - $8.50
Current price $8.50
Original price $8.95
Original price $8.95 - Original price $8.95
Original price $8.95

Metal reinforced, crush resistant, high temperature graphite fiber. Fits most Subaru EJ engines. Installs between intake manifold (TGVs) and cylind...

View full details

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

$1,199.99
$1,199.99 - $1,199.99
Current price $1,199.99
Original price $1,199.99 - Original price $1,199.99
Original price

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

View full details

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

$1,739.99 - $2,699.99
$1,739.99 - $2,699.99
Current price $1,739.99
Original price $1,739.99 - Original price $2,699.99
Original price

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

View full details

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

$2,247.00
$2,247.00 - $2,247.00
Current price $2,247.00
Original price $2,247.00 - Original price $2,247.00
Original price

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

Perrin Black Cold Air Intake 2018-2021 STI

Current price $236.25
$236.25 - $236.25
Current price $236.25
Original price $315.00
Original price $315.00 - Original price $315.00
Original price $315.00

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

View full details

AEM X-Series In-Line Wideband AFR Controller

Current price $221.95
$221.95 - $221.95
Current price $221.95
Original price $249.95
Original price $249.95 - Original price $249.95
Original price $249.95

AEM’s X-Series Inline Wideband UEGO Air/Fuel Ratio Controllers are built upon unique, patented, 100% digital technology that makes them the fastest...

View full details

Blouch Dominator 3.0G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

$2,458.50 - $2,558.50
$2,458.50 - $2,558.50
Current price $2,458.50
Original price $2,458.50 - Original price $2,558.50
Original price

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. DESCRIPTION The Blouch Dominator 3.0G2-R Ball Bearin...

View full details

Cusco Drive Shaft Heat Shield (Front Right Side) 2015-2021 STI

Current price $72.00
$72.00 - $72.00
Current price $72.00
Original price $80.00
Original price $80.00 - Original price $80.00
Original price $80.00

* Steel * Bolt on installation * Only for 6 Speed MT Protect Inner joint grease from high heat from muffler front pipe. 6A1 047 F

PLM Front Strut Tower Bar 2008-2021 WRX/STI

$195.00
$195.00 - $195.00
Current price $195.00
Original price $195.00 - Original price $195.00
Original price

Draw from our success of the PLM strut tower bar for Honda models, we are pleased to offer our strut tower brace for Subaru WRX & STI. Made fr...

View full details

ETS Single Scroll Turbo Kit 2015-2021 STI

$3,095.00 - $7,695.00
$3,095.00 - $7,695.00
Current price $3,095.00
Original price $3,095.00 - Original price $7,695.00
Original price

The ETS Subaru STI Turbo Kit is one of the most complete kits on the market utilizing optimal intercooler pipe routing and a larger ported s-cover ...

View full details

ETS Rotated Piping Kit 2015-2021 STI

$795.00 - $830.00
$795.00 - $830.00
Current price $795.00
Original price $795.00 - Original price $830.00
Original price

This piping kit is the best on the market for relocating the factory Subaru intercooler. The factory intercooler location allows for excessive heat...

View full details

ETS Stock Turbo Piping Kit 2015-2021 STI

$795.00 - $830.00
$795.00 - $830.00
Current price $795.00
Original price $795.00 - Original price $830.00
Original price

This piping kit is the best on the market for relocating the factory Subaru intercooler. The factory intercooler location allows for excessive heat...

View full details

GrimmSpeed Black Top Mount Intercooler Kit 2002-2007 WRX / 2004-2021 STI

Current price $679.15
$679.15 - $679.15
Current price $679.15
Original price $799.00
Original price $799.00 - Original price $799.00
Original price $799.00

The bar has been raised. So, you probably already know that you want an intercooler with maximum cooling and minimum restriction, but when it comes...

View full details

FactionFab MLS Up-Pipe to Turbo Gasket 2002-2014 WRX / 2004-2021 STI

$15.00
$15.00 - $15.00
Current price $15.00
Original price $15.00 - Original price $15.00
Original price

This is a quality and durable gasket that will provide your vehicle with a durable seal to maintain the performance of your vehicle. Here are the d...

View full details

OVERTAKE Downpipe Hardware Kit 2002-2014 WRX / 2004-2021 STI

$29.00
$29.00 - $29.00
Current price $29.00
Original price $29.00 - Original price $29.00
Original price

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...

View full details

OVERTAKE Maxx Flo Intake Panel Filter 2022-2026 WRX / 2019-2021 STI

$75.00
$75.00 - $75.00
Current price $75.00
Original price $75.00 - Original price $75.00
Original price

Higher Flow with Excellent Filtration | Overtake Maxx Flo Panel Filters Experience next-level engine performance with the Overtake MaxxFlo Subaru I...

View full details

OVERTAKE Phenolic Spacers 8mm Thick 2002-2014 WRX / 2004-2021 STI

$59.00
$59.00 - $59.00
Current price $59.00
Original price $59.00 - Original price $59.00
Original price

Overtake Phenolic Intake Manifold Thermal Spacer | Reduce Heat, Increase Power Is your Subaru engine running at its full potential? One of the bigg...

View full details

OVERTAKE Intercooler Inlet Gasket Set 2002-2007 WRX / 2004-2021 STI

$15.00
$15.00 - $15.00
Current price $15.00
Original price $15.00 - Original price $15.00
Original price

Overtake Intercooler Inlet Gasket Set | Be Done With Leaks The OEM Subaru Top Mount Intercooler (TMIC) gaskets are notorious for causing the most f...

View full details

OVERTAKE Turbo Heatshield 2002-2014 WRX / 2004-2021 STI

$90.00
$90.00 - $90.00
Current price $90.00
Original price $90.00 - Original price $90.00
Original price

Your factory heat shield gets cut or tossed the moment you install an aftermarket downpipe — and your intercooler pays for it every time you drive....

View full details

Perrin Black Cold Air Intake 2016-2017 STI

Current price $307.50
$307.50 - $307.50
Current price $307.50
Original price $410.00
Original price $410.00 - Original price $410.00
Original price $410.00

Increase horsepower and add under-hood style with the PERRIN Cold Air Intake. It features correct MAF alignment and tubing size to maintain proper ...

View full details

Radium Top Feed Fuel Rails 2002-2014 WRX/ 2007-2021 STI

Current price $199.45
$199.45 - $199.45
Current price $199.45
Original price $209.95
Original price $209.95 - Original price $209.95
Original price $209.95

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...

View full details

Radium Catch Can Kit 2002-2014 WRX / 2004-2021 STI

Current price $398.95
$398.95 - $398.95
Current price $398.95
Original price $419.95
Original price $419.95 - Original price $419.95
Original price $419.95

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

View full details

OVERTAKE Downpipe to Catback 3in Gasket 2X THICK 2002-2026 WRX / 2004-2021 STI

$26.00
$26.00 - $26.00
Current price $26.00
Original price $26.00 - Original price $26.00
Original price

Overtake 3in 2X Thick Exhaust Gasket | Be Done With Exhaust Leaks Looking for a Subaru gasket that won't leak? We get it – finding a high-quality g...

View full details

GrimmSpeed Red Top Mount Intercooler Aluminum Y-Pipe Kit 2002-2007 WRX / 2004-2021 STI

$196.00
$196.00 - $196.00
Current price $196.00
Original price $196.00 - Original price $196.00
Original price

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

View full details

OVERTAKE Battery Tie Down 2002-2026 WRX / 2004-2021 STI

$60.00
$60.00 - $60.00
Current price $60.00
Original price $60.00 - Original price $60.00
Original price

Overtake Billet Aluminum Battery Tie Down | Premium Engine Bay Upgrade Elevate the look of your Subaru engine bay with the Overtake Billet Aluminum...

View full details

GrimmSpeed Black Lightweight Battery Mount Kit 2008-2021 WRX / 2008-2021 STI

$129.00
$129.00 - $129.00
Current price $129.00
Original price $129.00 - Original price $129.00
Original price

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

View full details

Corsa Veloce Stradale Black Billet Intake Manifold 2006-2007 WRX / 2004-2021 STI

$2,499.99
$2,499.99 - $2,499.99
Current price $2,499.99
Original price $2,499.99 - Original price $2,499.99
Original price

CORSA VELOCE "STRADALE" SUBARU EJ BILLET INTAKE MANIFOLD FOR OE 64MM DBW THROTTLE BODY THE CORSA VELOCE STRADALE BILLET INTAKE MA...

View full details

Perrin Black Recirculating Blow Off Valve 2002-2007 WRX / 2004-2021 STI

Current price $208.50
$208.50 - $208.50
Current price $208.50
Original price $278.00
Original price $278.00 - Original price $278.00
Original price $278.00

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...

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.