Powerbuilt Oxygen Sensor Offset Puller, Remove and Install O2 Oxygen Sensors, Wire Gate, 22mm 7/8 Inch, 6 Point - 648691
Offset oxygen sensor socket provides extra leverage for easier removal even in hard to reach spots. Slotted design allows removing oxygen sensor with wiring harness attached. Precision casting for strength and accurate fit. 7/8" (22mm) hex fits almost all oxygen sensors. 3/8" square drive for use with ratchet.