XCMG Spare Parts CONNECTOR 803399778

This is the genuine XCMG connector, part number 803399778. It is a direct replacement for the electrical harness interface on specific medium and heavy wheel loaders. If your machine is throwing intermittent communication faults or has a brittle, cracked plug, this is the factory-correct fix.

The housing is manufactured from a robust, industrial-grade nylon that resists deformation under hood heat. It features a built-in wedge lock to ensure the terminals stay fully seated even when the machine is working in high-vibration environments like breaking up asphalt.

You will notice the integrated secondary seal at the wire entry point. This is critical for keeping moisture and fine silica dust away from the pins, which prevents that green corrosion that usually kills the circuit board in the sensor.

This connector is sold as the shell only; it does not include the metal terminals or wire seals. You will need to either depin your old connector or source the correct gauge terminals separately to complete the repair.

Check the pin configuration against your old part carefully before ordering. We keep these in stock specifically for XCMG drivetrain and hydraulic system repairs, ensuring you get the right fit without the long wait from overseas.