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Air and Fuel› Air Cleaners, Filters, Intakes and Components

AEM Cold

Chrome Cold Air Intake System

Name: Chrome Cold Air Intake System
Brand: AEM Cold
SKU: 21-685C

$575.99 $558.71 Save $17.28

SKU: 21-685C

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Easy — 1–2 hours

Overview

The AEM Cold Air Intake System 21-685C is designed to replace the restrictive factory air filter and air intake on compatible Honda Civic models. This system aims to increase horsepower and torque by allowing the engine to breathe more freely. It features an AEM Dryflow filter that does not require oil, simplifying maintenance. The intake is engineered for a direct fit and is dyno-tested to ensure performance gains. It is also noted as being 50-state legal.

Show original supplier description

The AEM 21-685C Performance Cold Air Intake System is designed to enhance airflow and performance by replacing your vehicle's restrictive factory components. This system is engineered, tuned, and dyno-tested to specifically fit Honda Civic SI and Acura ILX models. It utilizes an oversized AEM Dryflow synthetic washable air filter, which requires no oil and can last up to 100,000 miles before cleaning is needed, depending on driving conditions. The intake tubing is constructed from mandrel-bent aluminum with a durable gunmetal gray powder-coated finish. The air filter is strategically relocated to the driver-side wheel well to capture cooler ambient air, further reducing intake air temperature and boosting horsepower. The product is backed by AEM's Lifetime Limited Warranty. UroTuning does not list fitment vehicles for this item." Buyers are advised to verify fitment for their specific vehicle. Additionally, some AEM air intakes may not be legal for sale or use in California and other states adopting California emission standards. Users should consult the vehicle applications to determine the legal status for their specific vehicle.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	AEM Cold
Part Number	21-685C
Category	Air and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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