Toyota / Lexus 4-Pin 1.2mm Sensor Wire Harness Connector – OEM 90980-12160 / 7283-6134-70 / 90980-12159

Direct OEM-specification replacement for the Sumitomo 4-pin wire harness connector used on sensor circuits across Toyota and Lexus platforms. Cross-references Sumitomo / Toyota OEM part numbers 90980-12160, 7283-6134-70, and 90980-12159. Uses the 1.2mm contact series in yellow nylon housing — the 1.2mm series is Toyota’s standard small-signal sensor connector for temperature sensors, position sensors, and other low-current sensor circuits across multiple engine and body harness applications.

What Problem Does This Connector Solve?

The 4-pin 1.2mm sensor connector is used on a wide range of sensor circuits on Toyota and Lexus vehicles. The 1.2mm terminal is the smallest contact series in the Sumitomo automotive connector range and is particularly susceptible to corrosion in high-humidity environments. A failed sensor connector causes the ECM to lose sensor data, triggering fault codes and causing the engine to run on a fixed (limp-home) map. The yellow housing colour is used by Toyota to identify specific sensor harness connectors for quick identification during diagnosis.

OEM Part Number Cross-Reference

Key Specifications

Compatible Applications

• Toyota Corolla / Camry / RAV4 / Hilux / Land Cruiser – Temperature and position sensor harness connector
• Lexus IS / GS / RX / LS / LX – Small-signal sensor connector (1.2mm Sumitomo platform)

Frequently Asked Questions

Q: How do I confirm this is the correct connector for my sensor?
A: Cross-reference the OEM part number on your existing connector housing against 90980-12160, 7283-6134-70, or 90980-12159. If you cannot read the part number, count the pin cavities (4) and confirm the contact pitch is 1.2mm and the housing colour is yellow.

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