Skip to content

2015-2021 WRX & STI Mods

Process West Black Khanacooler Top Mount Intercooler 2015-2021 WRX

$735.00
$735.00 - $735.00
$735.00
$735.00 - $735.00

DESCRIPTION The Process West Intercooler Khanacooler is a direct-fit top-mounted intercooler solution for the 2015–2021 Subaru WRX that combines OE...

View full details
Save 9% Save %

Mishimoto Performance Aluminum Radiator 2015-2021 WRX

$443.95
$443.95 - $443.95
$443.95
$488.00
$488.00 - $488.00
$488.00

DESCRIPTION The Mishimoto 2015-2021 Subaru WRX Performance Aluminum Radiator is designed and engineered to reduce coolant temperatures by -202120 D...

View full details

COBB Tuning Hot Pipe Kit 2015-2021 WRX

$370.00
$370.00 - $370.00
$370.00
$370.00 - $370.00

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 Cold Pipe Kit 2015-2021 WRX

$480.00
$480.00 - $480.00
$480.00
$480.00 - $480.00

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 Silver Top Mount Intercooler Kit 2015-2021 WRX

$1,205.00
$1,205.00 - $1,205.00
$1,205.00
$1,205.00 - $1,205.00

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
Save 25% Save %

Perrin Silver Top Mount Intercooler 2015-2021 WRX

$667.50
$667.50 - $667.50
$667.50
$890.00
$890.00 - $890.00
$890.00

Add a consistent 10+ wheel horsepower with one of the largest Top Mounted Intercoolers on the market! We pushed every dimension to make this the b...

View full details
Save 23% Save %

TurboXS Front Mount Intercooler Kit Wrinkle Red 2015-2021 WRX

$1,504.94
$1,504.94 - $1,504.94
$1,504.94
$1,956.42
$1,956.42 - $1,956.42
$1,956.42

The TurboXS 2015+ Subaru WRX Front Mount Intercooler Kit might be the single best modification you can do to your 2015-2016 WRX.  One of the bigges...

View full details

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

$2,247.00
$2,247.00 - $2,247.00
$2,247.00
$2,247.00 - $2,247.00

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

ETS Rotated Piping Kit 2015-2021 STI

$795.00 - $830.00
$795.00 - $830.00
$795.00
$795.00 - $830.00

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
$795.00
$795.00 - $830.00

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

Torque Solutions Cylinder 4 Coolant Mod 2002-2014 WRX / 2004-2021 STI

$79.99
$79.99 - $79.99
$79.99
$79.99 - $79.99

DESCRIPTION Torque Solution Cylinder 4 Coolant Mod for Subaru EJ Engines was designed to increase coolant flow to cylinder #4 head area. The additi...

View full details

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

$182.00
$182.00 - $182.00
$182.00
$182.00 - $182.00

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

IBR Cylinder 4 Cooling Mod 2002-2014 WRX / 2004-2021 STI

$84.99
$84.99 - $84.99
$84.99
$84.99 - $84.99

DESCRIPTION This kit is designed to help increase the cooling to the #4 cylinder on the Subaru EJ series engines. This hose kit connects to an exis...

View full details
Save up to 9% Save %

Mishimoto Black Oil Cooler Kit 2015-2021 STI

$570.95 - $624.95
$570.95 - $624.95
$570.95
$628.00 - $687.00
$628.00 - $687.00
$628.00

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...

View full details
Save 9% Save %

Mishimoto Blue Silicone Radiator Hose Kit 2015-2021 WRX

$134.95
$134.95 - $134.95
$134.95
$148.00
$148.00 - $148.00
$148.00

DESCRIPTION Ditch the rubber and upgrade to the Mishimoto Silicone Radiator Hose Kit for your 2015 Subaru WRX. This kit includes upper and lower ra...

View full details
Save 6% Save %

Mishimoto Red Silicone Radiator Hose Kit 2015-2021 WRX

$134.95
$134.95 - $134.95
$134.95
$143.00
$143.00 - $143.00
$143.00

DESCRIPTION Ditch the rubber and upgrade to the Mishimoto Silicone Radiator Hose Kit for your 2015 Subaru WRX. This kit includes upper and lower ra...

View full details
Save 25% Save %

Perrin Neon Yellow Coolant Overflow Tank 2002+ WRX / 2004-2021 STI

$166.50
$166.50 - $166.50
$166.50
$222.00
$222.00 - $222.00
$222.00

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

View full details
Save 25% Save %

Perrin Red Coolant Overflow Tank 2002+ WRX / 2004-2021 STI

$156.00
$156.00 - $156.00
$156.00
$208.00
$208.00 - $208.00
$208.00

DESCRIPTION The Perrin Coolant Overflow Tank for the 2002+ Subaru WRX and 2004–2021 STI is a premium upgrade that replaces the factory plastic tank...

View full details
Save 9% Save %

Mishimoto Performance Aluminum Radiator 2008-2014 WRX/ 2008-2021 STI

$349.95
$349.95 - $349.95
$349.95
$385.00
$385.00 - $385.00
$385.00

DESCRIPTION Keep your Subaru WRX/STI running cool and performing at its peak with the Mishimoto Performance Aluminum Radiator. Designed to improve ...

View full details
Save 9% Save %

Mishimoto Black Silicone Radiator Hose Kit 2015-2021 WRX

$134.95
$134.95 - $134.95
$134.95
$148.00
$148.00 - $148.00
$148.00

DESCRIPTION Ditch the rubber and upgrade to the Mishimoto Silicone Radiator Hose Kit for your 2015 Subaru WRX. This kit includes upper and lower ra...

View full details
Save 9% Save %

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

$233.95
$233.95 - $233.95
$233.95
$257.00
$257.00 - $257.00
$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
Save 25% Save %

Perrin Black Charge Pipe 2015-2021 WRX

$288.75
$288.75 - $288.75
$288.75
$385.00
$385.00 - $385.00
$385.00

Replace the restrictive OEM plastic charge pipe to increase horsepower and boost response with the PERRIN Charge Pipe for 2015-2021 WRX!  NO TUNIN...

View full details
Save up to 25% Save %

Perrin Oil Cooler Kit 2002-2014 WRX / 2004-2021 STI

$418.50 - $780.00
$418.50 - $780.00
$418.50
$558.00 - $1,040.00
$558.00 - $1,040.00
$558.00

WHY YOU WANT THIS In racing conditions engine oil temperature skyrockets. This causes decreased engine performance and reduces the oil's ability to...

View full details
Save up to 25% Save %

Perrin Front Mount Intercooler Kit 2015-2021 WRX

$2,009.25 - $2,091.75
$2,009.25 - $2,091.75
$2,009.25
$2,679.00 - $2,789.00
$2,679.00 - $2,789.00
$2,679.00

Intercooler Construction The Perrin Intercooler Core is 28" long x 9.25" tall x 3.5" deep with a volume of 906.5 cu-in. which gives the Perrin Int...

View full details
Save 23% Save %

TurboXS Front Mount Intercooler Kit Polished 2015-2021 WRX

$1,504.94
$1,504.94 - $1,504.94
$1,504.94
$1,956.42
$1,956.42 - $1,956.42
$1,956.42

The TurboXS 2015+ Subaru WRX Front Mount Intercooler Kit might be the single best modification you can do to your 2015-2016 WRX.  One of the bigges...

View full details

AMS Performance Front Mount Intercooler Bumper Beam 2015-2021 WRX

$484.95
$484.95 - $484.95
$484.95
$484.95 - $484.95
$484.95

This is the AMS Performance Front Mount Intercooler Bumper Beam, which is an optional add-on for the AMS Front Mount Intercooler Kit. The Bumper Be...

View full details

COBB Tuning Black Front Mount Intercooler Kit 2015-2021 STI

$2,435.00
$2,435.00 - $2,435.00
$2,435.00
$2,435.00 - $2,435.00

DESCRIPTION Remove the overworked factory intercooler from your 2015+ STI in favor of the Black COBB Front Mount Intercooler Kit. Featuring a ...

View full details

COBB Tuning Black Front Mount Intercooler Core 2015-2021 WRX/STI

$1,150.00
$1,150.00 - $1,150.00
$1,150.00
$1,150.00 - $1,150.00

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

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

$2,333.00
$2,333.00 - $2,333.00
$2,333.00
$2,333.00 - $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
Save 25% Save %

Perrin Black 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

Replacement Intercooler and Bumper Beam for the PERRIN Front Mount Intercooler Kits!

ETS Rotated Intercooler Piping Conversion Kit 2015-2021 STI

$245.00 - $495.00
$245.00 - $495.00
$245.00
$245.00 - $495.00

This piping kit is used to convert your stock turbo ETS FMIC kit to work with the ETS rotated turbo kit. This kit won't work on any o...

View full details

ETS Titanium Stock Turbo Piping Kit 2015-2021 STI

$1,495.00 - $1,575.00
$1,495.00 - $1,575.00
$1,495.00
$1,495.00 - $1,575.00

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

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...

View full details

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 ...

View full details
Save 25% Save %

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...

View full details
Save 9% Save %

Mishimoto Liquid Chill Synthetic Engine Coolant Full Strength

$82.95
$82.95 - $82.95
$82.95
$91.00
$91.00 - $91.00
$91.00

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

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!