NB. Always refer to the relevant workshop manuals for special installation procedures.

1. After vehicle has cooled sufficiently to prevent personal injury and where prudent, the battery has been disconnected, unplug the connector and remove the sensor using a suitable tool.

2. Carefully check the vehicle harness and connector for damage or corrosion.

3. Check that the thread in the exhaust system is clean and in good condition before attempting to install the new sensor.

4. Ensure that you have selected the correct part number from the current NTK catalogue.

5. Handle sensors with care to prevent damage – dropping a sensor could inflict damage to the ceramic, which would not be apparent during installation.

6. During production an anti-corrosion compound is applied to threaded portion of the sensor body. This is a sensor friendly grease compound and no other anti-seize compounds should be used as they may contain ingredients that could poison the sensor element.

7. Do not use any other cleaning or anti-rust solvents near the sensor body as this could similarly affect the element.

8. Screw the sensor into place by hand then tighten to the specified torque setting ensuring that the wiring harness is not twisted.

9. Secure the harness using the correct fixings, ensuring that the routing does not produce any kinks in the wires, touch any part of the exhaust system or other hot components and does not foul any rotating parts.

10. Reconnect the harness (and battery if disconnected) and follow the vehicle manufacturers’ recommended fault code clearance or other specific procedures.