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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
AEM 2018 Subaru WRX STI 2.5L H4 F/I Cold Air Intake System - Wrinkle RedThe AEM 21 836WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno tested to fit specific Subaru WRX STI models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air
The AEM 21-836WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Subaru WRX STI models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box space and is protected by a heat shield which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable textured red powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor. The tapered cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). The air intake system is easy to install with commonly available tools and it is backed by AEM's Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards while others are 50 state legal. View the 21-836WR vehicle applications to determine the legal status for each vehicle.Technical Drawing
Installation Instructions
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018 | Subaru | WRX STI | Base |
| 2018 | Subaru | WRX STI | Limited |
| 2018 | Subaru | WRX STI | Type RA |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 1237 reviews
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Product Reviews
★★★★★ 5
Great toy for chewers!
Style: Tipsy Rosé
This is my dogs favorite toy! He is a super chewer and this has lasted longer than anything. It is also fun to play fetch with and bounces
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Reviewed in the United States on February 3, 2026
★★★★★ 4
Long lasting high entertainment toy
Style: Tipsy Rosé
I was gifted one of these for my puppy and it is a fabulous toy. I put in dried liver chunks with at least one that is a bit of a tight fit so it drags out the experience for him. It’s highly durable, gets dragged around and pushed under furniture, and shows tooth marks but is still very effective. I also appreciate it’s easy to clean.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Belgian Mal loves it
Style: Tipsy Rosé
Our Belgian Mal LOVES this toy so much! She hasn’t destroyed it and we got it before Christmas. We put her cookies in it and it keeps her busy for about an hour
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Reviewed in the United States on February 18, 2026
★★★★★ 2
Not super chew material
Style: Tipsy Rosé
This is marked as a super chewer. But it’s super flimsy I returned because my dog would destroy it in seconds. If you have a super chewer don’t recommend this toy!
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Excellent
Style: Bundle
These are so cute. My Chihuahua couldn’t pull them apart until I got it loose for him. A bigger dog may be able to do this easily. I think that is why he’s wasn’t too impressed with these. As a pet parent, they are a great toy. Extremely well made and excellent quality. Great value as well.
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Reviewed in the United States on January 5, 2026