SKU: 2773920811

DC Sports K Swap 4-2-1 Header

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Description

DC Sports K Swap 4-2-1 HeaderIntroducing the DC Sports K Swap 4 2 1 Header. 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. Optimized Tri Y 4 2 1 Design Compatible with K20 and K24 Swaps Fits 92 00 Civic, 94 01 Integra, & 93 97 Del Sol Works with Hasport or

Introducing the DC Sports K-Swap 4-2-1 Header. 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.

  • Optimized Tri-Y 4-2-1 Design

  • Compatible with K20 and K24 Swaps

  • Fits 92-00 Civic, 94-01 Integra, & 93-97 Del Sol

  • Works with Hasport or Innovative Mounts

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. See the fitment section below for exact fitments. 

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, DC 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. DC 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 includes 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.
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SKU: 2773920811

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Customer
Louisville, US
★★★★★ 5
Powerful Little Book
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I enjoyed this book so much that I have the kindle version and the paperback. Sometimes its hard to pray or I don’t know how to pray but I can grab this book and chose the topic I need in that moment. If I am out an about then I pull it up on the kindle app on the phone or iPad. It can be used daily to start your day. Lady’s she even includes a decree/prayer for energy and to keep our hormones balanced!!! It’s the very first decree/prayer in the book. For the end of the day there are decrees on restful sleep and visions and dreams from God. You can start your day with this book and end your day with it. Anything that pops up during the day that overwhelms you then this book probably has the decree you need in that very moment. I really enjoy that it is written in such a way that I am not praying alone but praying in agreement with others. Where two or more agree on anything it will be done (paraphrased Matt 18-19) I can almost hear Brenda praying these with me sometimes. There is something very comforting knowing that you are not praying these alone. This book has also helped/encouraged me to start writing my own scripture base decrees.
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Reviewed in the United States on June 13, 2021
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lisa polanco
Belleville, US
★★★★★ 5
I highly recommend this book. If you aren't sure how to pray a PRAYER for a specific area in your life or a loved ones life. This is the book for you.
Format: Kindle
I rated it 5 stars because thru my whole life there have been situations PRAYER was needed. I didn't know how to word them. I would just say GOD please help or save my family members, pets, friends, neighbors and myself. From death, hurts, harms and from the enemy. I glorify and thank GOD for this book of decrees. There might be about 100 decrees. Each section is the title, the decree Brenda and others prayed for and are anointed by GOD, scripture from bible, then word of encouragement that gives you examples or what to do. In the word of encouragement it tells you how to decree it for yourself. So it's 2 decrees at the same time. The one Brenda an others prayed for and the one you decree yourself in JESUS name. AMEN. Remember where more than one pray for the same thing, believe it and it's ours. I will continue to read a few each day. It fills my soul with cheer and joy. GOD bless you. GOD is good. He created this decree book thru his servant for me and others who might need guidance in how to pray and decree.
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Reviewed in the United States on January 6, 2021
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Anna Cencora
Lake Worth, US
★★★★★ 5
Love this book
Format: Paperback
Love this book of daily decrees. It has so many different decrees you can use for different issues you are dealing with. I love the author. I purchased two of her books. Very useful. Would definitely recommend it.
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Reviewed in the United States on April 26, 2025
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Phoenix, US
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Transform Your Prayer Life
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The Daily Decree equips the believer to walk in their God-given authority. Transform passive prayer life with bold, faith-filled declarations . Whether you are battling fear, lack, broken relationships, or delayed destiny - declare life with words backed by Scripture. B.D.
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Reviewed in the United States on May 24, 2026
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Alicia Coleman
San Leandro, US
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Daily insight
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On target daily of a word.. I have to read daily.. . Love this book
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Reviewed in the United States on May 4, 2026

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