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AEM Cold Air Intake System C.A.S. Honda Civic Si 2.0L L4 02-05

AEM Cold Air Intake System C.A.S. Honda Civic Si 2.0L L4 02-05

SKU:AEM21-508R

Regular price 13,168.00 ฿
Regular price Sale price 13,168.00 ฿
(Duties & import taxes included)
Import Duties & Taxes

The displayed price includes import duties and taxes. In principle, no additional payment is required upon delivery. If the shipping carrier nevertheless charges you import duties or taxes upon delivery, please pay the charges first. Shaft Shop will reimburse you for the amount paid.

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FAQs: Duties, Delivery & Fitment → View full details
The AEM 21-508R Performance Cold Air Intake System increases horsepower and torque 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 Honda Civic Si models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for excellent airflow, filtration, and performance. The air filter is relocated to the driver-side wheel well and is designed to reduce intake air temperature for increased horsepower. The intake tube is mandrel-bent aluminum with a durable red powder-coated finish. This air intake system is engineered to accommodate your engine's factory emissions control devices, including the intake air temperature sensor and a replacement breather hose. The tapered cylindrical AEM Dryflow air filter is made from oil-free synthetic filter media and can be used for up to 100,000 miles before needing cleaning, depending on driving conditions. The air intake system 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. Check the 21-508R vehicle application information to verify the legal status.


Before Ordering

〇 Regarding Import Consumption Tax
At Shaft-ya Shopping Site, we cover the import consumption tax incurred at the time of import, so there will be no additional charges beyond the total amount paid at checkout.

〇Confirmation of Compatibility
Since all product databases are based on North American vehicles (USDM), please confirm whether the item can be installed on a Japanese domestic vehicle (JDM) before placing your order. (If you are unsure whether a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to look it up for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model via the tabs on our homepage, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.

○ Regarding Delivery
Shipping costs are paid at the time of settlement. Shipping estimates are calculated automatically once you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the amount automatically calculated. In such cases, we will contact you individually via email.

Essentially, all products are shipped internationally from our U.S. warehouse. Unlike domestic delivery in Japan, international shipping takes approximately 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to check the delivery time. All products are shipped via air freight. No products are shipped by sea freight.

○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please note that all products handled by our company are fundamentally designed and manufactured outside of Japan. They are not compliant with the "Japanese Vehicle Inspection (Shaken) System," and we cannot provide strength study documents or similar paperwork for the Japanese vehicle inspection system. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.

○ Regarding Warranty
Please check the contents of your order as soon as it arrives. Because all products are shipped internationally from outside Japan, there may be shipping damage to the packing box or the product itself. Please understand that we will only provide returns, refunds, or replacement exchanges for items with shipping damage, defective products, or incorrect items if you contact us within 7 days of receipt. Furthermore, for products sold through our company, warranty-related support will be handled "exclusively through us." Please note that we do not provide support through other companies or distributors located in Japan.