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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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AEM Induction
AEM Cold Air Intake System 21-863C for 2019-2021 Subaru WRX STI (2.5L)
$299.99
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits 2019-2021 Subaru WRX STI (2.5L). This AEM cold air intake system is engineered to increase horsepower and torque by delivering a higher volume of cooler, denser air to your engine. The system replaces the restrictive factory air box and features a mandrel-bent aluminum intake tube to streamline airflow and reduce turbulence.
The included oversized AEM DRYFLOW synthetic air filter utilizes oil-free media, allowing for outstanding filtration and airflow without the need for re-oiling. Designed for longevity, this conical filter can go up to 100,000 miles between services under normal highway driving conditions. A custom-designed heat shield is provided to isolate the filter from engine bay heat, and it integrates directly with the factory fresh air duct for maximum efficiency.
- Part Number: 21-863C
- Filter Type: AEM DRYFLOW (Washable, Oil-Free Synthetic)
- Tube Material: Mandrel-bent aluminum
- Installation: Typically completed in less than 90 minutes using included hardware
- Service Interval: Up to 100,000 miles between cleanings
Each system is designed for a precise fit on the EJ25 engine, utilizing factory mounting points for a secure, bolt-on installation.
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2021 | Subaru | WRX STI | Base |
| 2019-2021 | Subaru | WRX STI | Limited |
| 2019 | Subaru | WRX STI | S209 |
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
AEM Cold Air Intake System 21-863C for 2019-2021 Subaru WRX STI (2.5L)
$299.99
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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$299.99
$299.99
$299.99
Fits 2019-2021 Subaru WRX STI (2.5L). This AEM cold air intake system is engineered to increase horsepower and torque by delivering a higher volume of cooler, denser air to your engine. The system replaces the restrictive factory air box and features a mandrel-bent aluminum intake tube to streamline airflow and reduce turbulence.
The included oversized AEM DRYFLOW synthetic air filter utilizes oil-free media, allowing for outstanding filtration and airflow without the need for re-oiling. Designed for longevity, this conical filter can go up to 100,000 miles between services under normal highway driving conditions. A custom-designed heat shield is provided to isolate the filter from engine bay heat, and it integrates directly with the factory fresh air duct for maximum efficiency.
- Part Number: 21-863C
- Filter Type: AEM DRYFLOW (Washable, Oil-Free Synthetic)
- Tube Material: Mandrel-bent aluminum
- Installation: Typically completed in less than 90 minutes using included hardware
- Service Interval: Up to 100,000 miles between cleanings
Each system is designed for a precise fit on the EJ25 engine, utilizing factory mounting points for a secure, bolt-on installation.
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2021 | Subaru | WRX STI | Base |
| 2019-2021 | Subaru | WRX STI | Limited |
| 2019 | Subaru | WRX STI | S209 |
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