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2015-2021 WRX & STI Mods

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Perrin Brake Reservoir Cover 2002+ WRX/STI

$11.25
$11.25 - $11.25
$11.25
$15.00
$15.00 - $15.00
$15.00

Dress up your engine bay while preventing leaks and spills from your master cylinder reservoir with the PERRIN Brake Reservoir Cozy.  Easy Installa...

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GrimmSpeed Red Radiator Shroud 2015-2021 WRX/STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION The GrimmSpeed Radiator Shroud has been designed to improve the overall cooling efficiency of your vehicle by channeling the incoming a...

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COBB Tuning Redline Carbon Fiber Fuse Cover 2008-2021 WRX/STI

$205.00
$205.00 - $205.00
$205.00
$205.00 - $205.00

The COBB Redline Carbon Fiber Fuse Cover for the 2008-2021 Subaru WRX/STI is constructed of solid carbon fiber featuring a 2x2 twill weave p...

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GrimmSpeed Black Lightweight Battery Tiedown 2002+ WRX / 2004-2021 STI

$43.00
$43.00 - $43.00
$43.00
$43.00 - $43.00

DESCRIPTION Clean up that engine bay and show your GrimmSpeed pride with our newly-designed Subaru Battery Tiedown. Laser cut, then CNC bent and po...

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GrimmSpeed Titanium 1.3 Bar Radiator Cap

$41.00
$41.00 - $41.00
$41.00
$41.00 - $41.00

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

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GrimmSpeed Red Pulley Cover 2015-2021 WRX

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION The GrimmSpeed Pulley Cover is a great way to improve the aesthetics of your engine bay by replacing the simple OEM cover that is plast...

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Perrin Red Radiator Shroud 2015-2021 WRX / 2015-2021 STI

$85.50 - $145.50
$85.50 - $145.50
$85.50
$114.00 - $194.00
$114.00 - $194.00
$114.00

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...

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COBB Tuning Redline Carbon Fiber Alternator Cover 2008-2014 WRX / 2008-2021 STI

$180.00
$180.00 - $180.00
$180.00
$180.00 - $180.00

The COBB Redline Carbon Fiber Alternator Cover is constructed of 2x2 twill carbon fiber sheet and finished off with a high quality clear coat tha...

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Perrin Red Intercooler Shroud 2015-2021 WRX

$255.75
$255.75 - $255.75
$255.75
$341.00
$341.00 - $341.00
$341.00

The PERRIN Engine Cover Kit replaces the OEM plastic engine cover, adding color and style to your engine bay. ENGINE DRESS-UP Add a bit of flair a...

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

$137.75
$137.75 - $137.75
$137.75
$145.00
$145.00 - $145.00
$145.00

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

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Compressive Tuning Intercooler Guard 2015-2021 WRX

$135.00
$135.00 - $135.00
$135.00
$135.00 - $135.00

Compressive Tuning Intercooler Guard 2022+ WRX Introducing AirShields by Compressive Tuning – the ultimate combination of durability, fu...

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OLM LE Dry Carbon Fiber Fuse Box Cover 2015-2021 WRX / 2015-2021 STI

$132.00
$132.00 - $132.00
$132.00
$132.00 - $132.00

DESCRIPTION The OLM LE Dry Carbon Fiber Fuse Box Cover was hand crafted with great attention to detail. Each piece is cared for and goes through a ...

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

$105.00 - $161.25
$105.00 - $161.25
$105.00
$140.00 - $215.00
$140.00 - $215.00
$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...

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

$69.99
$69.99 - $69.99
$69.99
$69.99 - $69.99

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...

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GrimmSpeed Splatter Red Black V2 Bolt Oil Cap 2002-2026 WRX / 2004-2021 STI

$59.00
$59.00 - $59.00
$59.00
$59.00 - $59.00

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...

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GrimmSpeed Black Electronic Boost Control Cover 2008-2021 STI

$62.00
$62.00 - $62.00
$62.00
$62.00 - $62.00

DESCRIPTION We decided on a subtle design for this cover that mimics the “vent” styling on our matching GrimmSpeed Alternator Cover. Is it made fro...

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GrimmSpeed Red Alternator Cover 2002-2014 WRX / 2004-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

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GrimmSpeed Neon Green Alternator Cover 2002-2014 WRX / 2004-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

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COBB Tuning Delrin Oil Cap 2002-2026 WRX / 2004-2021 STI

$95.00
$95.00 - $95.00
$95.00
$95.00 - $95.00

The COBB Delrin Oil Cap's construction of pure medical-grade black Delrin means it does not absorb heat like many aluminum options. The included ...

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Perrin Neon Yellow Oil Cap 2002+ WRX / 2004-2021 STI

$66.00
$66.00 - $66.00
$66.00
$88.00
$88.00 - $88.00
$88.00

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

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Perrin Red Pulley Cover 2015-2021 WRX

$124.50
$124.50 - $124.50
$124.50
$166.00
$166.00 - $166.00
$166.00

Accessorize the top of your engine and the pulleys with the PERRIN Belt Cover. Choose Red, Black, Neon Yellow, or Hyper Pink to accent your engine ...

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Compressive Tuning Airblades 2.0 2015-2021 WRX

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

Description The blades that promote even temperatures and airflow through your engine bay, while giving your Subaru an outstanding visual upgrade....

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COBB Tuning Radiator Shroud + Alternator Cover Package 2015-2021 STI

$190.00
$190.00 - $190.00
$190.00
$190.00 - $190.00

A quality product with easy installation! This COBB radiator shroud and alternator cover will not only dress up your engine bay but also help dir...

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Perrin Black Radiator Shroud 2015-2021 WRX / 2015-2021 STI

$85.50 - $145.50
$85.50 - $145.50
$85.50
$114.00 - $194.00
$114.00 - $194.00
$114.00

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...

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

$79.99
$79.99 - $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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GrimmSpeed Neon Green Electronic Boost Control Cover 2008-2021 STI

$59.00
$59.00 - $59.00
$59.00
$59.00 - $59.00

DESCRIPTION We decided on a subtle design for this cover that mimics the “vent” styling on our matching GrimmSpeed Alternator Cover. Is it made fro...

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COBB Tuning Aluminum Alternator Cover 2008-2014 WRX / 2008-2021 STI

$105.00
$105.00 - $105.00
$105.00
$105.00 - $105.00

This alternator shroud is made from 5052-H32 Aluminum, powdercoated wrinkle black, and features a laser etched COBB logo. WHY? A quality pro...

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GrimmSpeed Black Alternator Cover 2002-2014 WRX / 2004-2021 STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION Tired of being teased for your corroded alternator and boring engine bay? Step your Alternator Cover game up; GrimmSpeed has just what ...

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GrimmSpeed Black Radiator Shroud 2015-2021 WRX/STI

$99.00
$99.00 - $99.00
$99.00
$99.00 - $99.00

DESCRIPTION The GrimmSpeed Radiator Shroud for the 2015-2021 Subaru WRX/STI is made from CNC laser cut and bent aluminum and covered in a very dura...

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Verus Engine Bay Cap Kit 2015-2021 WRX/STI

$232.95
$232.95 - $232.95
$232.95
$232.95 - $232.95

OVERVIEW Cover up the lackluster plastic caps that come on your factory WRX/STI (VA/GR/GV) with a cap machined from solid aluminum.  The caps a...

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Perrin Black Oil Cap 2002+ WRX / 2004-2021 STI

$61.50
$61.50 - $61.50
$61.50
$82.00
$82.00 - $82.00
$82.00

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

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Perrin Red Oil Cap 2002+ WRX / 2004-2021 STI

$61.50
$61.50 - $61.50
$61.50
$82.00
$82.00 - $82.00
$82.00

Replace the ugly yellow plastic OEM oil fill cap with the sexy billet aluminum PERRIN Oil Fill Cap! Complete Your Engine Bay The Perrin Aluminum O...

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Perrin Black Pulley Cover 2015-2021 WRX

$124.50
$124.50 - $124.50
$124.50
$166.00
$166.00 - $166.00
$166.00

Accessorize the top of your engine and the pulleys with the PERRIN Belt Cover. Choose Red, Black, Neon Yellow, or Hyper Pink to accent your engine ...

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Perrin Neon Yellow Cam Solenoid Cover 2015+ WRX

$154.50
$154.50 - $154.50
$154.50
$206.00
$206.00 - $206.00
$206.00

Conceal the ugly OEM covers with the PERRIN Cam Solenoid Covers. Made from CNC machined aluminum and anodized black, blue, neon yellow, or red to ...

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Perrin Black Intercooler Shroud 2015-2021 WRX

$255.75
$255.75 - $255.75
$255.75
$341.00
$341.00 - $341.00
$341.00

The PERRIN Engine Cover Kit replaces the OEM plastic engine cover, adding color and style to your engine bay. ENGINE DRESS-UP Add a bit of flair a...

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

$138.60
$138.60 - $138.60
$138.60
$154.00
$154.00 - $154.00
$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,...

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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!