MRC Racing Components K20 K24 K-Series Tucked Engine Harness For Honda Acura

The MRC Racing Components Tucked Engine Harness is a premium replacement harness for the 2002–2004 RSX Type-S, while also being engineered to work seamlessly with most K-Series swap applications. Designed for both performance and clean engine bay aesthetics, this harness features a tucked layout that routes the main harness over the valve cover while hiding the injector wiring beneath the intake manifold.

Our latest design uses factory RSX connectors, ensuring proper fitment and OEM-level reliability while maintaining a clean, professional installation. Every harness is constructed using SAE-certified automotive-grade wiring, providing excellent resistance to moisture, heat, and automotive chemicals.

The entire harness is protected with military-grade heat shrink loom that is resistant to gasoline and diesel and rated for extreme temperatures from -55°C to 150°C (-67°F to 320°F). Each connector is clearly labeled to simplify installation and eliminate guesswork.

This harness includes all necessary engine connectors along with several additional provisions commonly required in K-swap applications, making it a versatile solution for both RSX replacements and custom builds.

Applications

• K-Swap vehicles
• 2002–2004 Acura RSX Type-S
• 2002–2004 Acura RSX Base
• 2001–2005 Honda Civic EP3 (Type-S or K24 swaps)

⚠ Will NOT fit RHD vehicles or RWD conversions

Features

• Uses factory RSX connectors for reliable OEM-style fitment
• Tucked harness design for a clean engine bay appearance
• SAE-certified automotive-grade wiring
• Fuel and chemical resistant loom rated from -55°C to 150°C (-67°F to 320°F)
• All connectors clearly labeled for easy installation
• Harness routes over the valve cover and can be hidden under a coil pack cover
• Injector wiring routed under intake manifold for a cleaner look
• Ground relocated under coil pack cover instead of front valve cover location
• Works with factory fuse box location or relocated fuse box under dash
• Single-wire coolant temp sensor lead for K-swap vehicles using factory clusters
• Three auxiliary wires routed from ECU to intake manifold area (two ECU pins pre-installed)
• Extra knock sensor connector included
• Wiring length supports both low and high frequency VSS transmissions
• Every harness inspected and tested before shipping

Included Connectors

• All engine connectors except EVAP and AC
• RSX injector plugs standard
• RDX injector compatibility (pins can be swapped into OEM RSX injector connectors)

Built for reliability, performance, and clean engine bay presentation, the MRC Racing Components Tucked K-Series Harness is the ideal solution for both RSX replacements and serious K-swap builds.

We appreciate your business and are committed to providing you with exceptional service and timely delivery. Please review the shipping information below for your order.

Order Processing Time:

Orders are usually processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days.

Shipping Methods:

Standard Shipping (3-7 business days)
Expedited Shipping (2-3 business days)
Express Shipping (1-2 business days)

Packaging:

Rest assured that all items will be securely and safely packaged to prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.

Shipping Rates:

Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.

Order Tracking:

Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your account.

International Shipping:

We ship worldwide! Please note that international shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.