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AEM Induction AEM Cold Air Intake System Subaru 2.5L 4-Cyl
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AEM Cold Air Intake System - Model 21-735WB

The AEM Cold Air Intake System, specifically the 21-735WB model, is engineered to enhance your vehicle's performance by improving horsepower and torque. It replaces the restrictive factory airbox and filter, allowing for a more aggressive engine sound and increased efficiency. By relocating the air filter outside the engine compartment, this system draws in cooler air, which is denser and contains more oxygen. This results in a more powerful combustion process, leading to significant gains in performance.

Key Features

  • Warranty: Limited Lifetime
  • Weight: 8.9 lb (4 kg)
  • Air Filter Color: Red
  • Air Filter Height: 9 in (229 mm)
  • Air Filter Material: Non-woven Synthetic
  • Air Filter Washable: Yes
  • Estimated Horsepower Gain: 32 HP @ 5400 RPM
  • Intake Pipe Material: Aluminum
  • Intake Pipe Color: Wrinkle Black
  • Street Legal: Yes, in all US states (Check vehicle applications)

Specifications

  • Clamp Material: Stainless Steel
  • Clamps Included: 3
  • Mass Air Flow Sensor Adapter: Included when required
  • Replacement Filter: 21-2029DK
  • CARB EO Number: D-670-24
  • Prop 65 Warning: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Benefits of the AEM Cold Air Intake System

This cold air intake system not only boosts performance but also simplifies maintenance with its washable air filter, eliminating the need for messy oil applications. Its durable aluminum construction ensures longevity and optimal airflow, while the sleek wrinkle black finish adds a stylish touch to your engine bay.

Customer Feedback

"The AEM 21-735WB has completely changed the way my car performs. The throttle response is sharper, and I can definitely feel the extra power when I accelerate. Plus, the installation was straightforward!"

"I love the sound of my engine now! The AEM intake gave it a deeper growl that I was looking for. Not to mention, the horsepower gain is noticeable. Highly recommend!"

Fitment

This intake system is designed to fit a variety of vehicles. For specific applications, please refer to the manufacturer's guidelines to ensure compatibility.

Notes:

California Air Resources Board Exempt: Yes; CARB EO: D-670-24; AEM - Metal Intake System; Wrinkle Black (CAS)

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

AEM Intake

AEM intake offers the very best cold air intake systems on the market, providing drivers with everything they need to get the most out of their vehicle. At Vivid Racing, we are proud to offer our customers AEM cold air intake systems, providing this trusted and reliable brand to all types of drivers.

Whether you are part of a professional race team or just like to push your car to the limit, an AEM intake system is a welcome addition to your vehicle.

What Is an AEM Cold Air Intake System?

An AEM cold air intake system is specifically designed to increase the volume of cold air flowing into your engine as you drive. The thinking behind this is that cold air is much denser than warm air. Therefore, if there is more cold air in your engine, there is more air in general, which also means that there is more oxygen. A higher amount of oxygen present in a car engine increases the potency of combustion, which can increase the power and efficiency of your engine.

What Are the Benefits of an AEM Intake System?

An AEM intake kit maximizes the amount of power you can get from your engine. This increase in power will also help you conserve fuel and increase your fuel efficiency, saving you money at the gas station. In a sense, an AEM intake system helps your car and engine “breathe” more efficiently, allowing it to reach its full potential.

Why Should I Choose an AEM Intake Kit?

AEM is regarded as one of the best aftermarket intake systems on the market, combining quality materials, cutting-edge technology and reliable design to help drivers around the globe improve the power of their engine. All AEM cold air intake systems are engineered to increase your car’s torque and horsepower, and any AEM intake kit comes with a lifetime limited warranty.

Purchase an AEM Cold Air Intake From Vivid Racing Today

Take your driving experience to the next level by purchasing an AEM cold air intake from Vivid Racing. We’ll help you find an AEM intake and air filter that perfectly fits your specific needs. To learn more or to order an AEM intake kit, contact Vivid Racing by calling (480) 966-3040.

Aem Lifetime Limited Warranty- This Limited Warranty Gives You Specific Legal Rights And You May Also Have Other Rights, Which Vary From State To State. [This Limited Warranty Can Also Be Found Online At Www.Aemintakes.Com/Warranty. We Limit The Duration And Remedies Of All Implied Warranties, Including, Without Limitation, The Warranties Of Merchantability And Fitness For A Particular Purpose To The Duration Of This Express Limited Warranty. Some States Do Not Allow Limitations On How Long An Implied Warranty Lasts. What Does This Warranty Cover? This Warranty Covers Defects In Materials And Workmanship Of Your Aem Air Intake System Or Aem Oe Replacement Filter (The "Product"), With The Exceptions Stated Below.

Aem One-Year Limited Warranty - This Limited Warranty Gives You Specific Legal Rights And You May Also Have Other Rights, Which Vary From State To State. This Limited Warranty Can Also Be Found Online At Www.Aemintakes.Com/Warranty . We Limit The Duration And Remedies Of All Implied Warranties, Including, Without Limitation, The Warranties Of Merchantability And Fitness For A Particular Purpose To The Duration Of This Express Limited Warranty. Some States Do Not Allow Limitations On How Long An Implied Warranty Lasts. What Does This Warranty Cover? This Warranty Covers Defects In Materials And Workmanship Of Your Aem Universal & Special Air Filter Or Aem Accessory (The "Product"), With The Exceptions Stated Below.

Aem 90-Day Limited Warranty - This Limited Warranty Gives You Specific Legal Rights And You May Also Have Other Rights, Which Vary From State To State. This Limited Warranty Can Also Be Found Online At Www.Aemintakes.Com/Warranty. We Limit The Duration And Remedies Of All Implied Warranties, Including, Without Limitation, The Warranties Of Merchantability And Fitness For A Particular Purpose To The Duration Of This Express Limited Warranty. Some States Do Not Allow Limitations On How Long An Implied Warranty Lasts. What Does This Warranty Cover? This Warranty Covers Defects In Materials And Workmanship Of Your Aem Accessory, Clothing, Promotional Material Or Raw Material (The "Product"), With The Exceptions Stated Below.

What Do These Warranties Not Cover:This Warranty Does Not Cover Damage Due To (A) Transportation, (B) Storage, (C) Improper Use, (D) Failure To Follow The Product Instructions Or To Perform Any Preventive Maintenance, (E) Modifications, (F) Unauthorized Repair, (G) Normal Wear And Tear, (H) Any Type Of Racing Or Competition, (I) Any Off-Road Use Or (J) External Causes Such As Accidents, Abuse, Or Other Actions Or Events Beyond Our Reasonable Control (E.G., Acts Of God And Natural Disasters).

What Will Aem Do? We Will Repair Any Product That Proves To Be Defective In Materials Or Workmanship. If Repair Is Not Possible, We Will Either Replace Your Product With A New Product Of Similar Composition And Price, Or Refund The Full Purchase Price Of Your Product, At Our Sole Discretion. There Is No Charge For Inspection.

How Do I Get Service?If You Are Ever Dissatisfied With The Materials, Workmanship Or Performance Of This Product, Just Give Aem A Call At 1-800-992-3000 And We Will Be Happy To Assist You.

Limitation Of Liability The Remedies Described Above Are Your Sole And Exclusive Remedies And Our Entire Liability For Any Breach Of This Limited Warranty. Our Liability Shall Under No Circumstances Exceed The Actual Amount Paid By You For The Product, Nor Shall We Under Any Circumstances Be Liable For Any Consequential, Incidental, Special Or Punitive Damages Or Losses, Whether Direct Or Indirect.

Installation Instructions

Click to view the Installation Instructions here

Dyno Sheet

Click to Download here

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Sale price None
Wholesale price $316.33
Shipping Weight: 7.90
Length: 21
Width: 13
Height: 13
Product Added At Friday 30 March, 2018
Product Modified At Friday 11 July, 2025
Imported By EPICF
Last Edited By Turn_API
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Emissions Info
Carb Approved Yes
Carb Number D-670-24
Epa Status Compliant
Prop65 Yes
Carb Required -
Vendors
Some placeholder content for the collapse component. This panel is hidden by default but revealed when the user activates the relevant trigger.
Vendor Inv Cost Retail Jobber MAP Core Updated
Turn 14 $253.06 $386.99 ? $299.99 ? 2025-07-11 10:02:00


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