Oxygen Sensor 1/1 Upstream

REMOVAL
1. Raise and support vehicle.
2. Disconnect electrical connector from sensor.

Oxygen Sensor 1/1 Upstream:

3. Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent.

INSTALLATION
1. After removing the sensor, the exhaust manifold threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite� 771-64 or equivalent. New sensors have compound on the threads and do not require an additional coating. Tighten the sensor to 28 N.m (20 ft. lbs.) torque.
2. Connect electrical connector to sensor.