4-Pin 1.2mm Waterproof Urea Pump / Temperature & Pressure Sensor Connector – OEM 10010346

Direct OEM-specification replacement for the 4-way 1.2mm pitch waterproof female connector used in diesel SCR (selective catalytic reduction) urea pump, DEF (diesel exhaust fluid) temperature sensor, and pressure sensor wiring harness applications, cross-referencing part number 10010346.

Key Specifications

Diesel SCR / DEF System OEM Fitment: 10010346

The 10010346 is used in diesel vehicles equipped with SCR (AdBlue/DEF) emission control systems for urea pump motor, DEF temperature sensor, and DEF pressure sensor harness connections. A common repair item for SCR system faults caused by connector corrosion in the harsh DEF fluid environment.

Common Vehicle Applications

• Diesel trucks and commercial vehicles – SCR urea pump harness
• Euro 5 / Euro 6 diesel passenger cars – DEF temperature and pressure sensor wiring
• Agricultural and construction equipment – AdBlue system harness repair

Package Contents

1 × 4-Way Waterproof Female Connector (10010346, 1.2mm pitch) with wire leads, terminal inserts, and wire seals pre-installed.

Frequently Asked Questions

Q: What causes urea pump connector failure on diesel SCR systems?
A: Common failure modes include terminal corrosion from DEF fluid (urea solution) exposure, wire chafing from vibration, and terminal push-back from connector mating cycles. DEF fluid is highly corrosive to copper terminals — inspect and replace connectors at the first sign of corrosion.

Q: Is this connector compatible with AdBlue / DEF systems on Euro 5 and Euro 6 diesel vehicles?
A: Yes. The 10010346 is used across Euro 5 and Euro 6 diesel SCR systems. Verify the OEM part number against your vehicle’s wiring diagram before ordering.