Honda K-Series K20 / K24 ECU Connector Plug Kit - A, B & E
Replace damaged Honda K-Series ECU connectors or build a new custom engine harness with this complete A, B and E ECU connector kit for compatible K20 and K24 engine-management systems.
These are OE-manufacturer connector housings, not low-cost reproduction plugs. JBtuned sources these connectors from the same connector manufacturer used by Honda for the original production components. Because they are supplied through the connector manufacturer rather than packaged as Honda service parts, the housings do not carry Honda branding.
OE-Manufacturer Connectors - Without the Honda Box
There is an important difference between an OE-manufacturer connector and an aftermarket copy. These housings come from the manufacturer that supplies the original-style connector system used by Honda, giving you the proper housing design, terminal retention and ECU mating interface without requiring a Honda-branded service package.
They should not be confused with generic reproduction ECU plugs.
Kit Includes
This kit includes the three K-Series ECU harness connectors commonly identified as Plug A, Plug B and Plug E, along with the correct large and small terminals needed for harness repair or fabrication.
- Plug A: 10 large terminals + 19 small terminals
- Plug B: 8 large terminals + 14 small terminals
- Plug E: 11 large terminals + 16 small terminals
Total terminals supplied:
- 29 large terminals - 16-18 AWG
- 49 small terminals - 20-16 AWG
Extra terminals are included in these totals so you have spares available for practice or replacement during harness assembly.
What Are the A, B and E ECU Connectors?
On the early Honda K-Series ECU arrangement, the engine-management harness connects to the ECU through connectors identified as A, B and E. Connectors A and B carry many of the engine-side circuits, while Connector E includes chassis and ECU-control functions used in the factory installation and in many K-swap conversion harnesses.
This kit replaces the harness-side connector housings and loose terminals. It does not include an ECU, completed wiring harness or pre-terminated wires.
Common K-Series Applications
This A / B / E connector family is used with several early Honda and Acura K-Series ECU applications, including:
- 2002-2004 Acura RSX - K20A2 / K20A3
- 2002-2005 Honda Civic Si - EP3 / K20A3
- 2002-2004 Honda CR-V - K24A1
- K-Series swaps using a compatible early K20 / K24 ECU and A / B / E harness configuration
Honda used multiple ECU connector arrangements across different K-Series years and applications. Verify that your ECU and harness use the A, B and E connector style shown before ordering.
Harness Repair or Complete Harness Fabrication
This kit can be used to replace broken, damaged or previously modified ECU connector housings on an existing K-Series harness, or as the starting point for a completely new custom engine harness.
Because the kit includes loose terminals rather than pre-terminated wires, proper open-barrel terminal crimping tools and automotive wiring experience are recommended.
Building or Repairing a K-Series Harness?
JBtuned carries many of the connector housings, terminals and wiring components needed for Honda and K-Series harness repair, custom harness fabrication and engine-swap wiring.
Whether you are replacing a damaged factory connector, building a conversion harness or starting a complete harness from scratch, we carry many of the ECU, chassis, sensor, injector and engine-side connectors commonly needed to complete the job.
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If you do not see the connector you need, check the Wiring category as our connector inventory continues to expand.
