Upstream 1/1, 2/1 - 2.7L

UPSTREAM 1/1, 2/1 - 2.7L









The engine uses two heated oxygen sensors, one in each exhaust manifold.

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.

2. Use Special tool #8439 to install oxygen sensor. Tighten the sensor to 41 Nm (30 ft. lbs.).

3. Connect the heated oxygen sensor electrical connector.

4. Install the negative battery cable.