Ford Focus 1.6L Rear left oxygen sensor 3M51-9G444-DC 2012 model

This rear left oxygen sensor is designed for the 2012 Ford Focus 1.6L model, perfectly matching the original installation position. It monitors oxygen content in the exhaust and feeds back to the ECU to optimize the air-fuel ratio, ensuring efficient engine operation and reduced emissions. OEM number 3M51-9G444-DC (corresponding to 0258006607) for cross-checking with inventory or customer needs. Replacement difficulty is medium; use a dedicated socket tool for removal and avoid thread damage. After installation, use a diagnostic tool to clear fault codes. As a KLP-brand product, it provides performance equivalent to the original and is suitable for bulk procurement for repair shops or fleets.