Performance K-Swap RSX Engine Harness

(4 customer reviews)

Quality race-grade 02-04 RSX Type-S engine wiring harness.

Upgrade your car with significant power boost and enhanced motor efficiency.

Original price was: $255.00.Current price is: $199.00.

Paypal secure payment badge
Secure Online Auto Shopping

limited stock

K-Swap RSX Engine Harness 02 – 04 Type-S


Looking to replace your old RSX engine harness or upgrade the wiring harness of your K-swap for better performance


Look no further than our supercharged performance upgrade K-Swap RSX Engine Harness! This top-of-the-line replacement part is designed to provide reliable and efficient performance for your engine.


Our K-Swap tucked RSX engine harness is a complete engine wiring solution that is custom designed to fit;

  • All K-swaps (K20, K24 models)
  • 02 – 04 RSX Type-S models
  • 02 – 04 RSX Base models
  • 01 – 05 CIVIC EP3 (Type-S or K24 swap)


It is built using high-quality, durable materials, including all necessary plugs with some little pro-racing extras;  (fan switch, temp sensor, IACV), ensuring that your motor is always performing at its best, no matter the conditions.

*Will not fit RWD cars and RHD cars


This harness is specifically designed for use with type-S K-Series engines and is expertly engineered to provide a significant power boost and enhanced motor efficiency for your car.

Whether you’re upgrading your RSX for street performance or taking it to the track, our tucked K-Swap RSX Engine Harness is the perfect choice for your performance needs.

performance rsx engine harness for kswap

Quality race-grade 02-04 RSX Type-S engine harness, made with SAE-certified automotive wiring. Resistant to moisture and most solvents, providing top performance and durability.


RSX Engine Harness Features

  • SAE-certified automotive-grade wiring
  • The Cover is gas and diesel resistant. (Rated 55°C  – 150°C | 67°F – 320°F) 
  • All plugs include except EVAP and AC
  • Includes single wire temp sensor (For K-swap stock cluster cars)
  • 3 AUX wires run from under the intake manifold (2 ECU pins pre-installed)
  • RSX injector plugs come standard
  • After your order is placed each harness is inspected and tested prior to shipping
  • Tucked design RSX type-s engine harness
    – Injector wiring runs from under the manifold between middle runners
    – Harness runs over valve cover (can be covered with coil pack)
    – Ground wire relocated to stud, under coil pack cover
    – Integrated power wire and charge harness (Works with fuse box)
  • Wiring long enough for both VSS low-frequency and high frequency
    – High-frequency transmission will require a repining plug and slight mod to VSS)
    – Extra knock sensor plug included


Why Choose Our K-Swap RSX Engine Harness?

  • Reliable Performance Boost: The harness is designed to provide reliable and efficient performance, ensuring that your engine is always running smoothly.
  • Easy Installation: The harness is designed to be plug-and-play, with clear instructions included to help you get the job done quickly.
  • Great Value For Money: Compared to others our K-Swap RSX Engine Harness is competitively priced, without compromising on quality, making it a great value for anyone looking to upgrade their car and engine performance.



STOP waiting, take action, and upgrade your motor.
Shop our K-Swap RSX engine harness today and take your car’s performance to the next level.


Weight2.508 lbs
Dimensions14.173 × 11.811 × 2.362 in
Ships From

United States

4 reviews for Performance K-Swap RSX Engine Harness

  1. Andy M.

    Nice deal. Shipping was on time and the product was delivered as described.

  2. Sebatian Gonzalez

    Love this. relatively easy to install on my 01 civic. awesome value! Thanks, guys. Your gears are always solid,

  3. Eric Sully

    Great value for money here. Has been a solid boost to my recent build.

  4. Martin Cz.

    Good fit for my k24. My swap is almost complete.

Add a review

AT JJH™ You Get Quality & Reliability

- Each purchase placed before 5 P.M CST is processed on the same and funneled for shipping and delivery within 24 hours. Depending on your delivery country, state, and address your coilover package should reach you within 5 to 14 business days.

- We ship with DHL, USPS, UPS, and LTL freight carriers, depending on which option is the fastest and most convenient for your delivery address. Items shipped by freight will require a recipient's signature upon delivery.

- All Items are shipped fully functional and insured. However, on very rare occasions, external damages may occur during shipping. If this happens, please take photos of the package and product immediately upon reception, and contact us ( to file a claim.

- Standard 30 days customer satisfaction warranty on this purchase

- Our performance parts warranty is limited to manufacturing and operational defects alone.

- All returns/refund claims MUST be accompanied by an authorized RMA (Return Merchandise Authorization); please always contact us at; to initiate a return.

-Non-warranty returns MUST be made within 15 days of purchase; Keep in mind that a 25% restocking and/or shipping charge fee may apply for certain returns.

- Make sure you always verify coilover/suspension fitment for your car prior to purchase.

This here is a mandatory precaution statement to help edify all our customers from California.

  • Businesses like ours, are required by law to state clearly that products offered on our website may fall under California's Proposition 65 law.
  • This does not apply to customers out of California, and will not affect your purchase in any way, shape, or form.

Trust Auto Shopping Badges
kswap rsx engine harness
Performance K-Swap RSX Engine Harness