The female connector for the WidebandO2 (Bosch LSU4 WBO2) sensor. Connector housing, and matching receptacles and small-rubber-seal included.
VAG part number: VAG 1J0 973 733

* make sure the purple lock-plate is in the open position
* push in the crimped receptacles from behind
* lock the purple locking plate (push to closed position)
* now connector can be used

By default the connector comes with the housing, wire seals, and uncrimped pins. You have the option of ordering the pins as pigtails (approx 4 feet).

Note: Pictured with the optional crimped wires.