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Part:   21-772C

AEM 21-772C Cold Air Intake

AEM Cold Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9
  • Increased horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum tubing
  • Easy to install using commonly available tools
  • Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
  • Washable and reusable oil-free filter media
  • AEM Lifetime Limited Warranty

The AEM 21-772C fits some Subaru Impreza, and Subaru XV Crosstrek models. See vehicle applications for details.
The AEM 21-772C 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 Impreza 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 air intake tube is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine’s factory emissions control devices including the mass airflow 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 21-772C vehicle applications to determine the legal status for each vehicle.

[More Information on AEM Cold Air Intake Systems]
Specifications AEM 21-772C Product Specifications
Estimated Horsepower Gain10 HP @ 5800 RPM
Replacement Filter21-2027DK
Air Filter ColorRed
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
Clamps Included3
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers IncludedNone
Product StyleAEM Cold Air Intake System
Intake Pipe Color / FinishGunmetal Gray
Intake Pipe MaterialAluminum
Street Legal In All US States No
TUV Approved (Europe)No
Weight12 lb (5.4 kg)
Product Box Height10.6 in (269 mm)
Product Box Length35.4 in (899 mm)
Product Box Width13.3 in (338 mm)
California RestrictedNot legal for sale or use in California
Mounting Hardware IncludedYes
WarrantyLimited Lifetime

Horsepower gains based on similar vehicle dynamometer test. Results will vary.
WARNING: Cancer and reproductive
Reviews Product Reviews

Erik VanVynck from Utah
November 30, 2018 - Part 21-772C
Installed in my 2013 XV Crosstrek. Sounds great, looks great, and it’s an ACTUAL cold air intake - heat shielded from engine bleed. To be honest, massive pain in the ass to install 2 parts - the filter onto the pipe, and the breather hose. The filter, I highly recommend you install everything onto the pipe before even putting it into the engine bay. If you try to do what the instructions say and tighten the filter bracket from your splash guard, you’ll have a rough time, as I found out. Since the breather hose isn’t shaped at all, that was also a huge pain to hook up - you should get 2 sets of very long needlenoses to get it in there. However, as I said, everything is fantastic. I love that the kit comes with all of the parts down to every last bolt, clamp, hose, and bracket with the exception of the 2 spring clamps on the breather hose. Definitely well engineered and worth the cost.
Keith Davis from Puyallup, Washington
November 23, 2017 - Part 21-772C
Great product and easy install, made a big difference to the sound and performance. Paired it with a new Magnaflow muffler and a stage 1 performance chip from GTE.
Adam Bandis from West Jordan, Utah
July 10, 2017 - Part 21-772C
The installation was nice and easy. I was surprised with the great sound and amazing difference it made in the torque and better acceleration response I could feel when driving my 2013 Subaru Impreza sedan.