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

AEM Cold

AEM Cold Air Intake System

$367.50

SKU: 21-508C

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The AEM Air Intake System 21-508C is a performance cold air intake designed to replace your vehicle's factory air filter and housing. The system features an oversized, washable AEM Dryflow synthetic air filter that can last up to 100,000 miles before cleaning is required. The intake tubing is constructed from mandrel-bent aluminum with a gunmetal gray powder-coated finish.
Show original supplier description
The AEM Performance Cold Air Intake System 21-508C is engineered to boost your vehicle's horsepower and torque by replacing the restrictive stock air filter and intake housing. This system is designed, tuned, and dyno-tested for optimal performance. Air enters through an oversized AEM Dryflow synthetic washable air filter, which offers exceptional airflow and filtration while being capable of lasting up to 100,000 miles between cleanings under normal driving conditions. The intake tubing is crafted from mandrel-bent aluminum and finished with a durable gunmetal gray powder coating. The design accounts for the vehicle's factory emissions control devices, including a replacement engine breather hose and water bypass hose. The Dryflow filter media is oil-free and reusable. This specific AEM cold air intake system is compatible with 2002-2005 Honda Civic Si models equipped with the 2.0L L4 F/I engine. It is backed by AEM's Lifetime Limited Warranty. It is important to note that some AEM air intake systems may not be legal for sale or use in California and other states that adopt California emission standards; however, others are 50-state legal. This system is not compatible with an Air Bypass Valve.

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

BrandAEM Cold
Part Number21-508C
CategoryAir 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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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