2021 Subaru WRX STI Intake Upgrade Parts
12 parts verified to fit your 2021 Subaru WRX STI for a complete intake upgrade. This is an easy DIY project — estimated 30-60 minutes.
Cold Air Intakes
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Injen
Injen 18-21 Subaru WRX STI H4 2.5L Turbo SP Aluminum Series Cold Air Intake - Polished
$369.10
aFe
aFe Takeda Momentum Pro Dry S Cold Air Intake System 18-19 Subaru WRX STI H4-2.5L
$420.00
Injen
Injen 18-21 Subaru WRX STI H4-2.5L Turbo SP Aluminum Series Cold Air Intake - Wrinkle Red
$369.10
aFe
aFe Takeda Momentum Pro 5R Cold Air Intake System Subaru WRX STI 18-19 H4-2.5L
$410.00
AEM Induction
AEM 19-21 Subaru WRX STI 2.5L H4 Cold Air Intake System
$299.99
Victor Reinz
MAHLE Original Subaru 2457Cc 2.5L Ej255 Intake Manifold Set
$41.61
Injen
Injen 18-21 Subaru WRX STI H4-2.5L Turbo SP Aluminum Series Cold Air Intake - Wrinkle Black
$369.10
AEM Induction
AEM Induction 2019 Subaru WRX STI 2.5L Cold Air Intake - Wrinkle Red
$419.99
Performance Air Filters
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Intake Upgrade for Other Subaru WRX STI Years
Other Jobs for Your 2021 Subaru WRX STI
Frequently Asked Questions
What parts do I need for a intake upgrade on my 2021 Subaru WRX STI?
A complete intake upgrade on the 2021 Subaru WRX STI typically requires cold air intakes, performance air filters. All parts shown on this page are verified to fit your specific vehicle.
How long does a intake upgrade take on a 2021 Subaru WRX STI?
A intake upgrade typically takes 30-60 minutes and is rated as easy difficulty. Actual time may vary depending on your experience and the specific parts being replaced.
Can I do a intake upgrade myself?
Yes! A intake upgrade is an easy DIY project that most people can do with basic hand tools. It's a great way to save money on labor costs.
Are these parts guaranteed to fit my 2021 Subaru WRX STI?
Yes, all parts on this page are verified to fit the 2021 Subaru WRX STI using VCDB fitment data from manufacturers. Our fitment information is cross-referenced with industry-standard vehicle databases to ensure accuracy.
What brands make intake upgrade parts for the 2021 Subaru WRX STI?
We carry intake upgrade parts from trusted brands including Injen, aFe, AEM Induction, Victor Reinz, and K&N. Filter by brand to find your preferred manufacturer.
How much does a intake upgrade cost for a 2021 Subaru WRX STI?
The cost of a intake upgrade for the 2021 Subaru WRX STI depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.