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Subaru STI Engine Parts

OVERTAKE Hella Horn Mounting Bracket 2002-2021 WRX / 2004-2021 STI

$44.00
$44.00 - $44.00
$44.00
$44.00 - $44.00

Overtake Hella Horn Mounting Bracket | Universal Fit, Adjustable, Durable Ever thought to yourself, "How do I let my crew know I'm coming?" Well, w...

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OVERTAKE Post MAF Intake Hose Kit 2008-2014 WRX / 2008-2021 STI

$89.00
$89.00 - $89.00
$89.00
$89.00 - $89.00

What if the air getting to your turbo was actually flowing smoothly? Your factory post-MAF hose is a wrinkled rubber accordion that disrupts airflo...

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OVERTAKE Boost Control Solenoid 2002-2005 WRX / 2008-2021 STI

$139.00
$139.00 - $139.00
$139.00
$139.00 - $139.00

Overtake 3-Port Electronic Boost Control Solenoid | Direct Fit & High-Resolution Boost Control The OVERTAKE 3-Port Electronic Boost Control Sol...

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OVERTAKE Enlarged Bore Intake Manifold to TGV Gasket 2002-2007 WRX / 2004-2021 STI

$12.00
$12.00 - $12.00
$12.00
$12.00 - $12.00

Overtake Intake Manifold Gasket | Be Done With Leaks Overtake Enlarged Bore Intake Manifold-to-TGV Gaskets are designed to enhance airflow and perf...

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OVERTAKE TGV to Engine Gasket Set 2002-2026 WRX / 2004-2021 STI

$12.00
$12.00 - $12.00
$12.00
$12.00 - $12.00

Overtake TGV Gasket | Be Done With Leaks Overtake TGV to Engine Gaskets are a must-have for any TGV removal or installation. We highly recommend re...

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

$90.00
$90.00 - $90.00
$90.00
$90.00 - $90.00

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....

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OVERTAKE Turbo Heatshield Reflective Gold Foil 2002-2014 WRX / 2004-2021 STI

$45.00
$45.00 - $45.00
$45.00
$45.00 - $45.00

Your heat shield absorbs radiant heat from the turbo and re-radiates it right back at your intercooler — unless you do something about it. The OVER...

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Overtake Radiator Hose Kit 2008-2014 WRX / 2008-2021 STI

$109.00
$109.00 - $109.00
$109.00
$109.00 - $109.00

Overtake Subaru Radiator Hose Kit | Stronger Than OEM Ensure your Subaru's cooling system is built to last with the Overtake Silicone Radiator Hose...

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FactionFab Pitch Stop Mount 2002-2026 / 2004-2021 STI

$120.00
$120.00 - $120.00
$120.00
$120.00 - $120.00

The pitch stop is designed to reduce front to back engine movement under acceleration and braking. In order to achieve maximum comfort, the factory...

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Perrin Neon Yellow Cold Air Intake 2016-2017 STI

$323.25
$323.25 - $323.25
$323.25
$431.00
$431.00 - $431.00
$431.00

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

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Perrin Hyper Pink Cold Air Intake 2016-2017 STI

$323.25
$323.25 - $323.25
$323.25
$431.00
$431.00 - $431.00
$431.00

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

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Perrin Red Cold Air Intake 2016-2017 STI

$307.50
$307.50 - $307.50
$307.50
$410.00
$410.00 - $410.00
$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 ...

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Perrin Black Cold Air Intake 2016-2017 STI

$307.50
$307.50 - $307.50
$307.50
$410.00
$410.00 - $410.00
$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 ...

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HKS Stainless Steel Equal Length Exhaust Manifold 2006-2014 WRX / 2004-2021 STI

$770.00
$770.00 - $770.00
$770.00
$770.00 - $770.00

DESCRIPTION  Experience enhanced exhaust performance with the HKS Equal Length Header (Exhaust Manifold) designed for the Subaru EJ25 motor. Compat...

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OVERTAKE Up-Pipe Hardware Kit 2002-2014 WRX / 2004-2021 STI

$29.00
$29.00 - $29.00
$29.00
$29.00 - $29.00

Overtake Up-Pipe Hardware Kit | Get Your Turbo Bolted Up Right If you've ever removed the turbo from your EJ powered Subaru, you know that the hard...

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OVERTAKE Drive-By-Wire Throttle Body Gasket 2006-2007 WRX / 2004-2021 STI

$9.00
$9.00 - $9.00
$9.00
$9.00 - $9.00

Keep your Subaru’s engine running exactly as it should with the OVERTAKE Drive-by-Wire Throttle Body Gasket. Designed for Subaru EJ engines includi...

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OVERTAKE Intercooler BPV Gasket 2002-2007 WRX / 2004-2021 STI

$12.00
$12.00 - $12.00
$12.00
$12.00 - $12.00

Overtake By-Pass Valve Gasket | Be Done With Leaks The OEM Subaru Top Mount Intercooler (TMIC) gaskets are notorious for causing the most frequent ...

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GrimmSpeed Black V2 Bypass Valve 2002-2007 WRX / 2004-2021 STI

$228.65
$228.65 - $228.65
$228.65
$269.00
$269.00 - $269.00
$269.00

DESCRIPTION The GrimmSpeed V2 Bypass Valve received many upgrades such as a redesigned the internal piston to eliminate the potential failure point...

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Forced Performance 84mm Inlet Pipe 2002-2014 WRX / 2004-2021 STI

$199.00
$199.00 - $199.00
$199.00
$199.00 - $199.00

DESCRIPTION To match the flow capabilities of our 84mm Flow Advancement Port™ Compressor Cover Subaru turbos, we offer this 84mm silicone intake sy...

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Corsa Veloce Competizione Silver Billet Intake Manifold 2006-2014 WRX / 2004-2021 STI

$2,499.99
$2,499.99 - $2,499.99
$2,499.99
$2,499.99 - $2,499.99

CORSA VELOCE "COMPETIZIONE" SUBARU EJ FORWARD FACING BILLET INTAKE MANIFOLD THE CORSA VELOCE COMPETIZIONE BILLET INTAKE MANIFOLD ...

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Corsa Veloce Competizione Black Billet Intake Manifold 2006-2014 WRX / 2004-2021 STI

$2,499.99
$2,499.99 - $2,499.99
$2,499.99
$2,499.99 - $2,499.99

CORSA VELOCE "COMPETIZIONE" SUBARU EJ FORWARD FACING BILLET INTAKE MANIFOLD THE CORSA VELOCE COMPETIZIONE BILLET INTAKE MANIFOLD ...

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

$2,499.99
$2,499.99 - $2,499.99
$2,499.99
$2,499.99 - $2,499.99

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

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

$2,499.99
$2,499.99 - $2,499.99
$2,499.99
$2,499.99 - $2,499.99

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

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Perrin Neon Yellow Master Cylinder Brace 2015-2021 WRX / 2015-2021 STI

$120.00
$120.00 - $120.00
$120.00
$160.00
$160.00 - $160.00
$160.00

The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness and response. REDU...

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

$249.75
$249.75 - $249.75
$249.75
$333.00
$333.00 - $333.00
$333.00

Why You Want It The PERRIN Turbo Inlet Hose, made with advanced silicone technology, outperforms the OEM part with a smoother, larger interior for...

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Perrin Silver Pitch Stop Mount 2002-2026 WRX / 2004-2021 STI

$87.75
$87.75 - $87.75
$87.75
$117.00
$117.00 - $117.00
$117.00

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

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Perrin Hyper Pink Pitch Stop Mount 2002-2026 WRX / 2004-2021 STI

$87.75
$87.75 - $87.75
$87.75
$117.00
$117.00 - $117.00
$117.00

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

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Perrin Blue Pitch Stop Mount 2002-2026 WRX / 2004-2021 STI

$87.75
$87.75 - $87.75
$87.75
$117.00
$117.00 - $117.00
$117.00

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

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Perrin Black Pitch Stop Mount 2002-2026 WRX / 2004-2021 STI

$87.75
$87.75 - $87.75
$87.75
$117.00
$117.00 - $117.00
$117.00

DESCRIPTION Under hard acceleration, the drivetrain is being twisted front-to-back from the front axle torque twist. To control this front-to-back ...

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Perrin Silver Intercooler Core 2015-2021 WRX / 2015-2021 STI

$833.25
$833.25 - $833.25
$833.25
$1,111.00
$1,111.00 - $1,111.00
$1,111.00

The PERRIN Standard Intercooler Core measures 28” long x 9.25” tall x 3.5” deep, with a total volume of 906.5 cu-in. It's a versatile choice that d...

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Turbosmart Blue GenV CompGate40 14psi External Wastegate

$394.19
$394.19 - $394.19
$394.19
$437.99
$437.99 - $437.99
$437.99

The GenV WG40 CompGate40 External Wastegate is a Motorsport-proven, cost-effective external wastegate – The Highest Flowing Wastegate of its kind. ...

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IAG Silver Revolve Engine Oil Fill Cap 2002-2026 WRX / 2004-2021 STI

$67.99
$67.99 - $67.99
$67.99
$79.99
$79.99 - $79.99
$79.99

TRANSFORM YOUR ENGINE BAY Get rid of the dull yellow plastic under your Subaru’s hood and upgrade your engine bay with the IAG Revolve Engine...

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IAG Black Revolve Engine Oil Fill Cap 2002-2026 WRX / 2004-2021 STI

$67.99
$67.99 - $67.99
$67.99
$79.99
$79.99 - $79.99
$79.99

TRANSFORM YOUR ENGINE BAY Get rid of the dull yellow plastic under your Subaru’s hood and upgrade your engine bay with the IAG Revolve Engine...

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IAG Blue Revolve Engine Oil Fill Cap 2002-2026 WRX / 2004-2021 STI

$67.99
$67.99 - $67.99
$67.99
$79.99
$79.99 - $79.99
$79.99

TRANSFORM YOUR ENGINE BAY Get rid of the dull yellow plastic under your Subaru’s hood and upgrade your engine bay with the IAG Revolve Engine...

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IAG Gold Revolve Engine Oil Fill Cap 2002-2026 WRX / 2004-2021 STI

$67.99
$67.99 - $67.99
$67.99
$79.99
$79.99 - $79.99
$79.99

TRANSFORM YOUR ENGINE BAY Get rid of the dull yellow plastic under your Subaru’s hood and upgrade your engine bay with the IAG Revolve Engine...

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IAG Purple Revolve Engine Oil Fill Cap 2002-2026 WRX / 2004-2021 STI

$67.99
$67.99 - $67.99
$67.99
$79.99
$79.99 - $79.99
$79.99

TRANSFORM YOUR ENGINE BAY Get rid of the dull yellow plastic under your Subaru’s hood and upgrade your engine bay with the IAG Revolve Engine...

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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.