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Hybrid Racing K-Series Swap Conversion Wiring Harness (88-91 Civic/CRX)
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play
  • Hybrid Racing K-Series Swap Conversion Wiring Harness for 88 - 91 Civic/CRX: Reliable & Plug - and - Play

Hybrid Racing K-Series Swap Conversion Wiring Harness (88-91 Civic/CRX)

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$215.99  $95.00
Save: 56% off

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30-Day Easy Returns

Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.

Product Description

  • Get a hassle - free plug - and - play K - Swap conversion harness!
  • Equipped with brand - new OEM connectors and pins for top - notch quality
  • Enjoy free phone and email tech support throughout your K - Swap journey
  • Powering thousands of successful K - Swaps worldwide!
split Start tab labels
  • Description
  • Vehicle Fitment
  • Install Guide
Start tab content
  • With over a decade of K - Series swap wiring expertise, the Hybrid Racing Conversion Harness is the go - to choice for a reliable K - Swap. It powers countless K - Swaps globally!

    The K - Swap harness easily connects with your factory dash harness, OEM K - Series engine harness, and K - Series ECU for a simple plug - and - play setup.

    What engine harness does the Hybrid Racing conversion harness work with

    • This harness is compatible with all USDM / JDM 02 - 04 wiring harnesses, like K20A, K20A2, and K20A3.
    • European customers using the UKDM K20A/K20A2 wiring harness need to convert it to use the narrowband type sensor as it's wired for the factory wideband O2 sensor.
    • It doesn't work with any 05 - 06 OR K24 engine wiring harnesses and ECU.
    What type of connectors and pins do you use

    When making a Hybrid Racing harness, we use brand - new connectors, terminals, and wire from the same company Honda uses. Ordered in bulk from Japan, these connectors ensure you get all new parts. No soldering of joints means fewer errors. Each harness is machine - made and human - checked, so it's problem - free.

    What if I have questions or problems

    All wires are labeled and neatly packaged for a smooth install. When you buy a Hybrid Racing harness, you get full tech support. This support covers everything related to your swap. Just call if you have any issues, and a tech will help you out.


  • Fits:
    • 88 - 91 CRX & Civic with K - Swap
  • View Install Guide HERE








Using the Hybrid Racing K - Series Swap Conversion Wiring Harness is easy. First, make sure your vehicle is an 88 - 91 CRX or Civic and you're doing a K - Swap. Check that your engine harness is a USDM / JDM 02 - 04 type like K20A, K20A2, or K20A3. If you're in Europe using a UKDM K20A/K20A2 wiring harness, convert it to use a narrowband type sensor. Connect the harness to your factory dash harness, OEM K - Series engine harness, and K - Series ECU. It's a plug - and - play setup, so no complex wiring work. If you face any problems during installation or use, just call or email for free tech support. Keep the harness away from extreme heat and moisture. Regularly check the connections to make sure they're secure. If you notice any loose or damaged parts, contact the support team right away.
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