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.
