The Lambda Sensor fits FORD FOCUS Mk3 1.0 Post Cat 12 to 14 Oxygen Bosch BV619G444BA is a high-quality oxygen sensor manufactured by Bosch in Germany. This sensor has 4 circuits and an overall length of 775mm, making it suitable for replacement of various part numbers such as 0258010355, 0258006607, and 0258010440. It is designed to function in the engine compartment of the vehicle and is a reliable choice for maintaining proper exhaust and emission systems in Ford Focus cars with a 1.0 engine. Be sure to check if the connection is correct.