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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
For Your Every Summer RSVP, with Code: SUMMER15
Description
Rywire K-series Conversion HarnessThis adapter is made to allow the installation of a K Series engine with the 02 04 K20 engine harness. This wire harness connects your K Series engine harness to your chassis interior harness while adding the E plug and all its functions. This harness is primarily made for a K Pro or Re Flashed ECU but can be used with a stock RSX ECU provided you have bypassed the immobilizers accordingly. Please checkout the Xenocron "swap box" immobilizer delete in
This adapter is made to allow the installation of a K-Series engine with the 02-04 K20 engine harness. This wire harness connects your K-Series engine harness to your chassis interior harness while adding the E-plug and all its functions.This harness is primarily made for a K-Pro or Re-Flashed ECU but can be used with a stock RSX ECU provided you have bypassed the immobilizers accordingly.
Please checkout the Xenocron "swap box" immobilizer delete in the ECU's & EMS's category.
This harness may require the user to pull the shock tower plugs into the interior for a better fit and cleaner installation. You are also required to drill a small hole in your exhaust tunnel for the O2 Sensor plug. After a year of R&D, this method is the way our customers doing this swap said were the best & cleanest.
There will be 5 wires to be connected to your factory ECU plugs with a diagram that accurately shows which wires to connect to.
You won't use your stock engine harness with the K20, but you still continue to use your chassis Interior harness with this conversion, so don't toss it or cut it!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
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Product Reviews
★★★★★ 3
Ugly
Color: 01 - Light Grey
The light blue color looks like a hospital gown. Keeps cool but I don't think I can bear looking at it.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Cooling pillowcase
Color: 01 - Light Grey
These cooling pillowcases are fabulous. I just have one complaint they snap at the end instead of having a zipper, which could be uncomfortable if you’re laying on that snap. Also, it’s very hard to unfasten.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
Comfy and cooling pillow cases for sleeping
Color: 01 - Light Grey, Color: 01 - Light Grey
Cooling cover for my pillow, great quality and super soft. Helps with my sleep. Have eye mask as a gift too. Highly recommended.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
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Reviewed in the United States on May 9, 2026
★★★★★ 5
BEST, MOST COMFORTABLE PILLOWS EVER!
Color: White-cooling Basic, Size: Queen(Pack of 2)
I've used others.BEST PILLOWS EVER! Firm, cooling and supportive. LOVE THESE!
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Reviewed in the United States on May 28, 2026