Excavator / Yamaha OBD2 3-Pin Solenoid Valve / Sensor Connector – OEM 6181-0072 / 6189-0131 / DJ7038-2-21

Direct OEM-specification replacement for the Sumitomo 3-pin wire harness connector used on solenoid valves, sensors, and OBD2 diagnostic circuits across excavator, Yamaha, and automotive applications. Cross-references Sumitomo / Honda OEM part numbers 6181-0072, 6189-0131, DJ7038-2-21, and DJ7038-2-11. Grey nylon housing — a versatile 3-pin connector used across construction equipment solenoid valve harnesses, Yamaha marine and motorcycle sensor harnesses, and automotive OBD2 diagnostic circuits.

What Problem Does This Connector Solve?

The 3-pin solenoid valve connector is used on hydraulic control solenoids in excavators and construction equipment, where it is exposed to hydraulic fluid, vibration, and extreme temperature cycling. A failed connector causes a solenoid valve to remain open or closed, resulting in hydraulic system faults and loss of machine function. On Yamaha marine and motorcycle applications, a failed sensor connector causes engine management faults. On automotive OBD2 applications, a failed connector causes diagnostic communication faults.

OEM Part Number Cross-Reference

3-Pin Circuit Function (Solenoid Valve)

Key Specifications

Compatible Applications

• Komatsu / Hitachi / Caterpillar excavators – Hydraulic solenoid valve harness connector
• Yamaha outboard / motorcycle – Sensor and diagnostic harness connector
• Automotive OBD2 harness – Diagnostic circuit connector

Frequently Asked Questions

Q: Are terminals included?
A: Yes, terminals are included with all variants.