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21-732C AEM Cold Air Intake System

$284.99USD
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SKU
AEM-21-732C
C.A.S. SUBARU WRX L4-2.0L F/I, 2015-2019
The AEM 21-732C 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 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 gunmetal gray 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 21-732C vehicle applications to determine the legal status for each vehicle.
  • 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
Estimated Horsepower Gain25 HP @ 4200 RPM
Replacement Filter21-2027DK
Air Filter ColorRed
Air Filter MaterialNon-woven Synthetic
Air Filter Outlet ShapeRound
Clamps Included1
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers IncludedNone
Product StyleAEM Cold Air Intake System
Air Filter Height7 in (178 mm)
Intake Pipe Color / FinishGunmetal Gray
Intake Pipe MaterialAluminum
CARB EO NumberD-670-24
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Weight12.5 lb (5.7 kg)
Product Box Height14.94 in (379 mm)
Product Box Length22.2 in (564 mm)
Product Box Width14.5 in (368 mm)
Mounting Hardware IncludedYes
WarrantyLimited Lifetime
No cross references found for this part
DIY Level

Advanced Moderate Easy

Tools Needed

Wrench, Extension, Flat Blade Screwdriver, Allen Wrench

Installation Time

90 Minutes

AEM Products

Engineered to outperform

Air Intakes

Air Intake Systems

Custom-engineered tubes deliver better airflow than you get with a stock intake. More air means better performance.

Air Filters

Air Filters

Using cotton gauze instead of typical folded paper, our filters increase airflow while providing excellent engine protection.

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