DC Sports K Swap 4-2-1 Header Acura Integra | Honda Civic/Del Sol 1992-2001

DC Sports K Swap 4-2-1 Header Acura Integra | Honda Civic/Del Sol 1992-2001

SKU: VR.DCS-HDR-01-06

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DC Sports K Swap 4-2-1 Header Acura Integra | Honda Civic/Del Sol 1992-2001

$569.99

Quantity:

DC Sports K Swap 4-2-1 Header Acura Integra | Honda Civic/Del Sol 1992-2001

$569.99

Description
Shipping & Return

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

Introducing the DC Sports K-Swap 4-2-1 Header ? a meticulously engineered solution for Honda enthusiasts seeking to maximize the potential of their K20 or K24 engine swaps. This header is designed not only to address common K-swap installation challenges but also to deliver usable power gains. With its one-piece 304 stainless design, CNC-machined flanges, and equal-length Tri-Y layout, it ensures optimal exhaust flow and performance.

Vehicle Fitment and Compatibility
Engineered to fit 1992-2000 Honda Civics, 1993-1997 Honda Del Sol, and 1994-2001 Acura Integras, this header is compatible with both K20 and K24 engine swaps using Hasport or Innovative mount kits. Hasport mounts accommodate two height positions, while the header works perfectly in both. For Innovative mounts with forward and back positions, the header optimizes performance in the most forward configuration.

Header Design and Pulse Timing
The equal-length 4-2-1 layout mirrors Honda's original engine design, pairing cylinders 1-4 and 2-3 to match the 1-3-4-2 firing order. This configuration maintains consistent 360-degree spacing across the 720-degree cycle, allowing the low-pressure wave from one cylinder to reach the next during overlap. The result is enhanced scavenging, reduced exhaust reversion, and a more consistent torque curve.

At the head, they precisely opened the flange ports to match the PRC Type R oval profile. The 304 stainless steel head flange starts as a 1/2-inch plate and is CNC-machined down to 3/8 inches in low-stress areas to reduce weight while maintaining flatness and rigidity. Strategically reinforced zones remain at 1/2 inch to prevent warping and ensure a tight seal.

Runners, Welds, and Collector Geometry
Each primary runner is precision mandrel-bent from 304 stainless steel, featuring a 1.5-millimeter wall thickness. The runners are flared to match the PRC oval port shape and seated approximately one-quarter inch into the CNC-machined flange. They've implemented full internal and external flange welds to maximize penetration, ensure optimal sealing, and minimize potential cracking during repeated heat cycles.

The runner sizing follows a carefully calculated stepped design to balance velocity and flow:

Primaries start at 48mm
Step to 50.8mm
Merge at roughly 15 degrees into 54mm secondaries
Finish with a 7-degree transition into a 63.5mm 2.5-inch collector

Each dimensional and angular specification is precisely calculated to optimize exhaust scavenging and overall system efficiency.

Outlet Location and O2 Sensor Placement
The outlet is positioned near the tunnel centerline, taking into consideration common K swap shifters and cables. Routing is planned so everything fits without subframe hammering or complicated mid pipes, and the header lands where it should while preserving ground clearance for lowered cars. A 2.5-inch stainless flex bellow between the header and collector absorbs engine movement and protects the welds, and allows you to easily weld it up to your exhaust of choice with the included two-bolt flange that comes in the box.

Lastly, many swap headers install a single O2 bung in a position that places the end of the O2 sensor where it can rub against the floorpan. DC Sports include two oxygen sensor bungs and position them to clear the chassis and protect wiring. This allows you to run both the OEM primary and secondary sensors, or you can plug the second port and use it for quick wideband access at the dyno. The goal is simple: remove installation issues for a clean and easy install.

Bottom Line
If you're looking for a K swap header that combines performance, compatibility, and ease of installation, this is it. Whether you're daily driving or hitting the track, this header will help you get the most out of your K20 or K24 engine swap.

Features:

Full 304 stainless steel construction
Hand-polished finish
Fits K20 and K24 in EG/DC/EK chassis
Standard 2.5" outlet (expandable to 3")
High-quality flex joint
One-piece 4-2-1 design

Fitment:

Acura Integra 1994-2001
Honda Civic 1992-1995
Honda Civic 1996-2000 (with EG/DC Subframe)
Honda Del Sol 1993-1997

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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.