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Enhance your Mazda Mazda3's performance with the AEM 21-773C Performance Cold Air Intake System, engineered to deliver increased horsepower and torque by replacing the factory air filter and intake housing. Designed specifically for 2015-2018 Mazda3 models, this system features an oversized AEM Dryflow synthetic washable air filter that provides outstanding airflow, filtration, and long-term durability. The filter is conveniently located within the original airbox space and is shielded by a heat shield, which reduces intake air temperature for improved engine efficiency and power output. The heat shield is engineered to adapt seamlessly to the factory cold air scoop, ensuring optimal airflow and temperature management. The mandrel-bent aluminum intake tube is finished with a durable gunmetal gray powder coating, offering both strength and corrosion resistance. It is engineered to maintain compatibility with all factory emissions control devices, including the mass air sensor and engine breather hose, facilitating a straightforward installation process using common tools. The synthetic filter media is oil-free and designed for up to 100,000 miles of use before cleaning, depending on driving conditions. This system is backed by AEM's Lifetime Limited Warranty, providing confidence in its durability and performance. Please verify vehicle compatibility to ensure legal compliance, as some AEM intake systems are not California legal. This cold air intake system is an excellent upgrade for Mazda3 owners seeking increased power and improved throttle response without compromising reliability or emissions compliance. It is not CARB-approved but offers a significant boost in performance for daily driving and spirited driving enthusiasts alike.
Features:
Fitment:
Mazda 3 i Grand Touring 2015
Mazda 3 i Grand Touring 2016
Mazda 3 I Sport 2015
Mazda 3 I Sport 2016
Mazda 3 i SV 2015
Mazda 3 I Touring 2015
Mazda 3 I Touring 2016
Mazda 3 Sport 2017
Mazda 3 Sport 2018
Mazda 3 Touring 2017
Mazda 3 Touring 2018
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Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
