Skip to content

2015-2021 WRX & STI Mods

IBR FA24 Engine Swap Kit 2015-2021 WRX

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

This kit is designed to assist in swapping the FA24 engine from the 22+ WRX into the earlier generation 2015 to 2021 WRX. The kit also includes the...

View full details

Turbosmart Blue GenV CompGate40 14psi External Wastegate

Current price $394.19
$394.19 - $394.19
Current price $394.19
Original price $437.99
Original price $437.99 - Original price $437.99
Original price $437.99

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

View full details

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

$79.99
$79.99 - $79.99
Current price $79.99
Original price $79.99 - Original price $79.99
Original price

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...

View full details

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

$79.99
$79.99 - $79.99
Current price $79.99
Original price $79.99 - Original price $79.99
Original price

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...

View full details

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

$79.99
$79.99 - $79.99
Current price $79.99
Original price $79.99 - Original price $79.99
Original price

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...

View full details

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

$79.99
$79.99 - $79.99
Current price $79.99
Original price $79.99 - Original price $79.99
Original price

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...

View full details

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

$79.99
$79.99 - $79.99
Current price $79.99
Original price $79.99 - Original price $79.99
Original price

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...

View full details

OLM LE Dry Carbon Fiber Intake Duct Cover 2015-2021 WRX

$199.00
$199.00 - $199.00
Current price $199.00
Original price $199.00 - Original price $199.00
Original price

Highlights Imported from Japan by OLM Lengthy production ensures unparalleled quality. Effortlessly installs over the stock intake duct Enhances e...

View full details

IAG Purple Dipstick w/ Billet Handle 2015-2021 WRX

$69.99
$69.99 - $69.99
Current price $69.99
Original price $69.99 - Original price $69.99
Original price

FACTORY FIT WITH A CUSTOM LOOK Get rid of the bright yellow factory dipstick and transform your Subaru’s engine bay with the IAG Subaru Dipst...

View full details

IAG Gold Dipstick w/ Billet Anodized Handle 2015-2021 WRX

$69.99
$69.99 - $69.99
Current price $69.99
Original price $69.99 - Original price $69.99
Original price

FACTORY FIT WITH A CUSTOM LOOK Get rid of the bright yellow factory dipstick and transform your Subaru’s engine bay with the IAG Subaru Dipst...

View full details

IAG Silver Dipstick w/ Billet Anodized Handle 2015-2021 WRX

$69.99
$69.99 - $69.99
Current price $69.99
Original price $69.99 - Original price $69.99
Original price

FACTORY FIT WITH A CUSTOM LOOK Get rid of the bright yellow factory dipstick and transform your Subaru’s engine bay with the IAG Subaru Dipst...

View full details

IAG Gold Revolve Coolant Reservoir Cap 2002-2026 WRX / 2004-2021 STI

$49.99
$49.99 - $49.99
Current price $49.99
Original price $49.99 - Original price $49.99
Original price

TRANSFORM YOUR ENGINE BAY Get rid of the unattractive OEM yellow cap and upgrade your engine bay with the IAG Revolve Coolant Reservoir Cap...

View full details

IAG Blue Revolve Coolant Reservoir Cap 2002-2026 WRX / 2004-2021 STI

$49.99
$49.99 - $49.99
Current price $49.99
Original price $49.99 - Original price $49.99
Original price

TRANSFORM YOUR ENGINE BAY Get rid of the unattractive OEM yellow cap and upgrade your engine bay with the IAG Revolve Coolant Reservoir Cap...

View full details

IAG Black Revolve Coolant Reservoir Cap 2002-2026 WRX / 2004-2021 STI

$49.99
$49.99 - $49.99
Current price $49.99
Original price $49.99 - Original price $49.99
Original price

TRANSFORM YOUR ENGINE BAY Get rid of the unattractive OEM yellow cap and upgrade your engine bay with the IAG Revolve Coolant Reservoir Cap. ...

View full details

IAG Performance Equal Length Header 2015-2021 WRX

$849.99
$849.99 - $849.99
Current price $849.99
Original price $849.99 - Original price $849.99
Original price

THE IAG PERFORMANCE EQUAL LENGTH HEADER The IAG Performance Equal Length Header is the perfect upgrade to boost the performance and power in ...

View full details

IAG Race Series Pitch Stop Mount 2002-2026 WRX / 2004-2021 STI

$124.99
$124.99 - $124.99
Current price $124.99
Original price $124.99 - Original price $124.99
Original price

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

View full details

IAG Black Competition Series Pitch Stop Mount 2002-2026 WRX / 2004-2021 STI

$124.99
$124.99 - $124.99
Current price $124.99
Original price $124.99 - Original price $124.99
Original price

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

View full details

OVERTAKE Exhaust Manifold to Turbo Gasket 2015-2021 WRX

$27.00
$27.00 - $27.00
Current price $27.00
Original price $27.00 - Original price $27.00
Original price

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

View full details

OVERTAKE Aluminum BIG TURBO Inlet 2015-2021 WRX

$280.00
$280.00 - $280.00
Current price $280.00
Original price $280.00 - Original price $280.00
Original price

Stronger, Smoother, 5-10HP+ | Big Aftermarket Turbo Ready Ditch your WRX’s weak plastic turbo inlet and upgrade to the Overtake Aluminum BIG TURBO ...

View full details

OVERTAKE Aluminum Turbo Inlet 2015-2021 WRX

$230.00
$230.00 - $230.00
Current price $230.00
Original price $230.00 - Original price $230.00
Original price

Stronger, Smoother, 5-10HP+ | Don't Risk the Crack Anymore! Ditch your WRX’s weak plastic turbo inlet and upgrade to the Overtake Aluminum Turbo Ve...

View full details

AMS Performance Billet Engine Oil Dip Stick 2006-2021 STI

$84.95
$84.95 - $84.95
Current price $84.95
Original price $84.95 - Original price $84.95
Original price $84.95

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

View full details

AMS Performance Billet Engine Oil Dip Stick 2015-2021 WRX

$84.95
$84.95 - $84.95
Current price $84.95
Original price $84.95 - Original price $84.95
Original price $84.95

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

View full details

OVERTAKE Pitch Stop Mount Race Version 2002-2026 WRX / 2004-2021 STI

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

Overtake Billet Aluminum Pitch Stop Mount | RACE VERSION Upgrade your Subaru's engine stability with the OVERTAKE Billet Aluminum Race Pitch Stop M...

View full details

OVERTAKE Pitch Stop Mount Street Version 2002-2026 WRX / 2004-2021 STI

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

Overtake Pitch Stop Mount | Enhanced Engine Stability and Performance Upgrade your Subaru's engine stability with the OVERTAKE Pitch Stop Mount. Th...

View full details

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

$529.99
$529.99 - $529.99
Current price $529.99
Original price $529.99 - Original price $529.99
Original price

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...

View full details

Mishimoto Liquid Chill Synthetic Engine Coolant Full Strength

Current price $82.95
$82.95 - $82.95
Current price $82.95
Original price $91.00
Original price $91.00 - Original price $91.00
Original price $91.00

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

View full details

Mishimoto Liquid Chill Radiator Coolant Additive

Current price $20.95
$20.95 - $20.95
Current price $20.95
Original price $23.00
Original price $23.00 - Original price $23.00
Original price $23.00

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

View full details

Mishimoto Liquid Chill Synthetic Engine Coolant Premixed

Current price $52.95
$52.95 - $52.95
Current price $52.95
Original price $58.00
Original price $58.00 - Original price $58.00
Original price $58.00

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

View full details

GrimmSpeed Gold V2 Bolt Oil Cap 2002-2026 WRX / 2004-2021 STI

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

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...

View full details

GrimmSpeed Silver V2 Bolt Oil Cap 2002+ WRX / 2004-2021 STI

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

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...

View full details

GrimmSpeed Red V2 Bolt Oil Cap 2002+ WRX / 2004-2021 STI

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

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...

View full details

Blouch Dominator 16G-XT-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

$1,809.50 - $1,909.50
$1,809.50 - $1,909.50
Current price $1,809.50
Original price $1,809.50 - Original price $1,909.50
Original price

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. The Blouch 16G-XT-R Ball Bearing Turbocharger is a s...

View full details

Blouch Dominator 2.5G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

$2,337.50 - $2,437.50
$2,337.50 - $2,437.50
Current price $2,337.50
Original price $2,337.50 - Original price $2,437.50
Original price

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. DESCRIPTION The Blouch Dominator 2.5G2-R Ball Bearin...

View full details

Blouch Dominator 1.5G2-R Ball Bearing Turbocharger 2002-2007 WRX / 2004-2021 STI

$2,216.50 - $2,316.50
$2,216.50 - $2,316.50
Current price $2,216.50
Original price $2,216.50 - Original price $2,316.50
Original price

Disclaimer: Photos are for illustrative purposes only, the actual product may differ slightly. DESCRIPTION The Blouch Dominator 1.5G2-R Ball Bearin...

View full details

Mishimoto Black Coolant Overflow Tank 2008-2021 WRX / 2008-2021 STI

Current price $233.95
$233.95 - $233.95
Current price $233.95
Original price $257.00
Original price $257.00 - Original price $257.00
Original price $257.00

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

View full details

If you own a Subaru WRX STI, you know you have the perfect platform to craft a masterpiece on wheels. At WRXDaily, we understand that every enthusiast has a vision, and we’re here to offer the WRX STI mods you need to bring yours to life. With products tailored to elevate performance, enhance style, and perfect handling, our curated selection puts endless possibilities at your fingertips. 

No matter what you need, our Subaru WRX STI modifications deliver quality and reliability you can trust. From high-performance upgrades to must-have Subaru STI accessories, we have everything you need to create a car that’s as bold and unique as your passion for driving. Own a 2018 WRX? We offer a variety of 2018 WRX parts designed to fit your specific model. 

With WRXDaily, your Subaru becomes a true reflection of your style and ambition. Browse our selection of WRX STI mods today and start your next build!