The Bosch 0258987001 Heated Oxygen Sensor is also referenced by GM 12575657. It is a direct-fit front oxygen sensor for various GM/Cadillac applications. The unit is placed before the catalytic converter and provides exhaust oxygen feedback to the engine control system. This allows for closed-loop air-fuel mixture management.

The unit also measures the oxygen content in exhaust gases to help the ECM optimize the air/fuel ratio. This sensor is particularly relevant to Cadillac CTS, SRX and STS applications. This includes selected 3.6L and 4.6L gasoline engines. It has a 407 mm overall length, 5-wire sensor configuration, threaded mounting and application-specific connector.

The sensor provides the required physical and electrical characteristics for compatible installations. As you know, damaged or incorrect sensors can affect fuel-trim operation, emissions performance, drivability and fuel economy. So, in case the existing sensor is not functioning properly and requires a replacement, it is important that you purchase the 0258987001 unit.

You can contact Jaggi Earthmovers for more details regarding the Bosch 0258987001 lambda sensor.