What does an Oxygen Sensor do?

The Oxygen Sensor detects the amount of oxygen in the exhaust gas and sends a signal to the engine control unit which adjusts the air fuel mixture to the optimal level.

Too much oxygen in the exhaust gas indicates a lean mixture, which can cause performance problems, including misfires. Too little oxygen indicates a rich mixture, which wastes fuel and results in excess exhaust emissions.

When does an Oxygen Sensor need to be replaced?

Exposure to carbon, soot, harmful gases, anti-freeze, chemicals plus thermal and physical shock will shorten the life of an Oxygen Sensor. This results in increased fuel consumption, poor engine performance and excessive exhaust emissions.

That’s why checking for and replacing a worn out Oxygen Sensor is an important part of every routine service.

Oxygen Sensors with 1 or 2 wires typically have a service life of 50,000kms. While 3 and 4 wire sensors have a service life of approximately 100,000kms.

A full list of recommended replacement intervals can be located in the Bosch Oxygen Sensor Program Catalogue.

Why choose a Bosch Oxygen Sensor?

Bosch invented the Automotive Oxygen Sensor.

Bosch has manufactured over 400 million Oxygen Sensors since 1976, and is the world’s largest producer of Oxygen Sensors.

Bosch currently supplies Oxygen Sensors to virtually all vehicle manufacturers around the world. Bosch Oxygen Sensors meet or better OEM specifications.

Bosch have a huge range of direct fit oxygen sensors plus a range of universal fit oxygen sensors which cover more than 90% of the Australian carparc.

Bosch heated universal Oxygen Sensors feature a revolutionary Posi-Lock® connection system which can be unscrewed and reconnected in case of a wiring mistake. No special tools are required and user friendly instructions are included.

Bosch Oxygen Sensors are competitively priced and sold through leading automotive part stockists. Please see our ‘Dealer Locator’ at the top of the page to locate you local store.