DC Sports Cold Air Intake – 1999-2000 Honda Civic Si (EM1) – CAI5604
If you daily an EM1 or keep one as a weekend toy, you know the factory intake is basically a straw. The
DC Sports Civic Si Cold Air for the 1999-2000 Honda Civic Si (EM1) fixes that. This Civic Si intake system (SKU: CAI5604) is built specifically for the
B16A2, giving you sharper throttle response, smoother midrange, and a louder, cleaner induction note you’ll actually hear over the exhaust.
The mandrel bent aluminum intake replaces the stock rubber snorkel with a lightweight, higher-flow path so the engine pulls in cooler, denser air where it matters.
This isn’t just about a dyno sheet. A proper cold air intake setup changes how the car reacts to your right foot.
You’ll feel the Civic Si throttle response improvement right away—crisper revs, better pull past VTEC, and a more willing top end.
The deeper intake tone under load makes the car feel like it should’ve from the factory. It’s a true
CARB compliant Civic Si intake, so you stay legal in all 50 states and don’t have to swap back for inspections.
Install is a straightforward quick install job in the driveway with hand tools, and everything you need is in the box.
We run this same intake on our EM1 shop car, so what you’re buying is exactly what we trust.
Key Features
Built specifically for the 1999-2000 Civic Si Air Intake layout with the B16A2 engine
Part Number: CAI5604
Mandrel bent aluminum intake tubing for smoother, higher airflow vs. factory rubber
Draws cooler air for measurable gains in horsepower and torque on a healthy B16A2
Deeper, more aggressive induction sound when VTEC comes on
50 State C.A.R.B. compliant Civic Si intake for legal street use everywhere
Direct bolt-on, quick install Civic Si intake with all brackets, hardware, and couplers included
Includes a DC Sports air filter Si – a high flow Civic Si air filter that’s reusable and built for performance
Lightweight Civic Si air intake layout keeps weight off the nose while improving drivability
Fitment
1999-2000 Honda Civic Si (EM1) – EM1 cold air intake configuration only
SHIPPING
All items are subject to a handling period before they are dispatched. 99% of orders leave the warehouse within 1-3 days of payment. We will notify you by email when your items have been shipped. Most items should be received within 3-7 business days of your order date. This may be longer for international delivery.
* DELIVERY TIME= Processing Time + Shipping Time
* These shipping times are estimates, not guarantees but we always strive to get your order to you as soon as possible.
Shipping Costs:
● Shipping fees are calculated at checkout based on your location and the chosen shipping method.
Order Tracking:
● Once your order ships, you will receive a confirmation email with a tracking number and a link to monitor your shipment's status.
International Shipping:
● We ship internationally to selected countries. Rates and delivery times vary by destination.
Customs Fees and Import Duties:
● International orders may incur customs duties and taxes, which are the customer's responsibility. Please check with your local customs office for details.
Lost or Damaged Shipments:
● We are not liable for packages that are lost or damaged during shipping. For damaged items, please contact the shipping carrier to file a claim.
Customer Service Contact:
● For any questions regarding shipping, reach out to our customer service team at sales@sbxperformance.com
RETURN/REFUND POLICY
We have a 30-day return policy, which means you have 30 days of purchase your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
-Returns accepted within 30 days of purchase if the item is unused and in original packaging.
-Customer is responsible for return shipping unless the product is defective.
-Refunds processed within 5-7 business days after receiving the returned item.
To start a return, you can contact us at sales@sbxperformance.com.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at sales@sbxperformance.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
We do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at sales@sbxperformance.com.
