4-Pin 1.0mm Waterproof MAP / MAF / Intake Pressure Sensor Connector – Toyota / Mitsubishi / Honda | Sumitomo 6189-0551 / MD355556
Direct OEM-specification replacement for the Sumitomo 4-way 1.0mm pitch waterproof connector used in MAP (manifold absolute pressure), MAF (mass airflow), and intake pressure sensor wiring harness applications, cross-referencing part numbers 6189-0551 (Sumitomo) and MD355556 (Mitsubishi OEM). Used across Toyota, Mitsubishi, and Honda vehicle platforms.
| Attribute | Specification |
|---|---|
| OEM Part Numbers | 6189-0551 (Sumitomo) / MD355556 (Mitsubishi) |
| Vehicle Compatibility | Toyota, Mitsubishi, Honda |
| Pin Count | 4-Way |
| Pitch | 1.0mm |
| Application | MAP sensor, MAF sensor, intake pressure sensor harness |
| Seal Type | Waterproof – sealed housing with wire seals |
| Housing Material | PA66 Nylon – heat and chemical resistant |
| Terminal Plating | Tin-plated copper, high-precision |
| Wire Gauge Range | 0.3mm² – 0.5mm² (22–20 AWG) |
| Operating Voltage | 12V DC (signal circuits) |
The MD355556 is Mitsubishi’s OEM procurement number for the Sumitomo 6189-0551 connector housing. Both refer to the identical 4-pin 1.0mm waterproof connector used in Mitsubishi Lancer, Galant, and Outlander, as well as Toyota and Honda vehicles for MAP/MAF sensor harness connections.
1 × 4-Way Waterproof Connector (6189-0551 / MD355556, 1.0mm pitch) with wire leads, terminal inserts, and wire seals pre-installed.
Q: Is Sumitomo 6189-0551 the same as Mitsubishi MD355556?
A: Yes. The MD355556 is Mitsubishi’s OEM part number for the Sumitomo 6189-0551 housing. Both refer to the identical connector.
Q: What causes MAP sensor connector failure on Mitsubishi Lancer?
A: Common failure modes include terminal corrosion from engine bay moisture, wire chafing at the connector entry, and terminal push-back from vibration. A faulty MAP connector can cause rough idle, poor fuel economy, and engine management warning lights.
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4 Pin Connectors
