K-Tuned Engine Harness Honda K-Series
£996.22 – £1,369.81Price range: £996.22 through £1,369.81
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Applies to all in-stock items only.
why buy from us
- 14 Day Return Period
- Authorised Dealer
- Free UK Delivery over £100
- Expert Advice 24/7
Description
Applications:
- K-Swap Cars
- 2002 – 2004 Acura RSX Type S
- 2002 – 2004 Acura RSX Base
- 2001 – 2005 Civic EP3 (Type S or K24 Swap)
For Instructions Click Here
Note:
- We have 6 different harnesses available. Different routing, power wire options, and wire/loom.
- Race-Grade Version – Uses Raychem DR-25 loom and upgrade TXL Wire with nylon braid for increased strength.
- Street-Grade Version – Uses standard heat-shrink tubing and TXL Wire.
- Routing Option –
- OEM Routing is ideal for RHD and Mid-Engine setups as the harness splits on-top of the trans.
- Tucked Routing harness runs over the valve cover and into the firewall by the oil pressure switch. This will not work on RHD or Mid-Engine cars.
- Power Wire Option – Integrated Power Wire adds an extra power wire to the harness. This will give you a simple way to run power from fuse box to starter (Then daisy chain to alternator). This does add some size to the harness and reduces flexibility slightly. The fuse box must be close to the shock tower or under the dash. RSX/EP3/K-Swap EM2 must run without power wire.
- New design uses factory RSX connectors.
Features:
- All plugs included except EVAP and AC
- Covering is gas and diesel resistant and rated for -55 ° C to 150 ° C (-67 ° F to 320 ° F)
- SAE Certified Automotive Grade Wiring
- All plugs are labeled
- Tucked design
- Harness runs over valve cover (Can be covered with coil pack cover)
- Integrated power wire and charge harness. Works with fuse box in stock location or relocated under dash.
- Injector wiring runs from under manifold between middle runners.
- Ground wire relocated to stud under coil pack cover (instead of front of the valve cover)
- Includes single wire temp sensor wire (For k-swap cars stock cluster)
- 3 Aux wires run from ECU to under intake manifold. Two ECU pins pre-installed.
- Wiring long enough for both VSS low frequency or high frequency (High Frequency transmissions will require repining plug and slight modification to VSS)
- Extra knock sensor plug included.
- Each harness is inspected and tested before shipping.
- RSX injectors plugs come standard (RDX injectors can be easily switched)
The K-Tuned Tucked Engine Harness is designed as a high quality replacement 02-04 RSX Type-S harness that offers a super clean look. We have made the harness with lots of features so it will work with nearly all K-Series engine swaps and the 02-04 RSX Type S. It includes all the necessary plugs with a handful of extras (Fan Switch, IACV, Temp Sensor, ETC). We used only SAE certified automotive grade wiring resistant to moisture and most solvents to ensure quality and durability. High quality military grade heat shrink loom is used to cover entire harness which is resistant to gas and diesel. It is rated for -55 ° C to 150 ° C (-67 ° F to 320 ° F). We have also used a popular and clean tucked wire layout. The main harness runs over the valve cover and even hides the injector plugs, which come up from under the manifold. RSX injector plugs come with all harnesses. The pins on RSX injector plugs can be fitted into the oem RDX plugs which makes switching quick and simple. We have incorporated the charge harness and alternator power wire into the harness. We used a thin, but high grade power wire to help keep the overall size down. On swap chassis, the power wire will work with fuse box in factory location or relocated under the dash. Separate power wire is available for other chassis and those that prefer to run their own charge wiring. Everything is labeled clearly to ensure a simple installation and no confusion.
RETURNS & Warranty
Returns Policy
We want you to shop with confidence at Sansoms Specialist Parts. If you are not completely satisfied with your purchase, you may return eligible items in accordance with the policy below.
Returns must be requested within 14 days of delivery
Items must be unused, uninstalled, and in original packaging
Products must be returned in a resaleable condition
Proof of purchase is required
Custom-made, special-order, or clearance items may be non-returnable unless faulty.
How to Request a Return
Please contact our support team before returning any item. Returns sent without prior authorisation may be refused.
Email: support@sansomsspecialistparts.co.uk
Include your order number and reason for return.
Refunds
Once your return has been received and inspected, we will notify you of the outcome. Approved refunds will be processed to the original payment method within 5–10 working days.
Original shipping costs are non-refundable unless the item is faulty or incorrect.
Warranty Information
All products sold by Sansoms Specialist Parts are covered by a manufacturer’s warranty, where applicable.
Warranty coverage typically includes:
Manufacturing defects
Faults occurring under normal use
Warranty does not cover:
Incorrect installation
Wear and tear
Damage caused by misuse or modification
Track or competition use unless stated otherwise
Warranty Claims
To make a warranty claim, please contact us with:
Order number
Description of the issue
Supporting photos or videos
Claims are subject to inspection and manufacturer approval.
Important Notes
Professional installation is strongly recommended
Warranty may be void if parts are incorrectly fitted
Vehicle compatibility is the customer’s responsibility
Need Help?
If you have any questions regarding returns or warranty, our team is happy to assist.
Delivery & Stock
Delivery Options
We aim to get your performance parts to you as quickly and safely as possible.
Standard UK Delivery: 3–5 working days
Express UK Delivery: 1–2 working days (subject to availability)
International Delivery: 5–10 working days (depending on location)
All orders are carefully packaged to ensure your parts arrive in perfect condition.
Shipping Costs
Standard delivery is charged at checkout based on weight and destination
Free UK delivery on orders over £100
We offer tracked shipping so you can monitor your order every step of the way.
Stock Availability
Most parts are held in stock for immediate dispatch
Some specialist or custom parts may have longer lead times
Stock levels are updated regularly, but occasionally items may be temporarily unavailable
If a product is out of stock, we will notify you immediately and offer alternatives or an estimated delivery date.
Order Processing
Orders are typically processed within 1–2 working days
You will receive a confirmation email once your order has been dispatched
Large or heavy items may require additional handling time
Important Notes
Performance parts may require professional installation
Delivery times are estimates and may vary during peak periods
International shipments may be subject to customs or import fees

















