BMW 528i 2008-2010 Rear Oxygen Sensor 11787539137 Original Quality

BMW 528i (E60) 2008-2010 with N52 engine rear O2 sensor OEM 11787539137 uses zirconia ceramic elements and corrosion-resistant stainless casing; tested to rugged dyno durability; signal stable under exhaust temperature fluctuations; performance essentially equal to OEM; service life 80,000–100,000 km. Located behind the catalytic converter; monitors exhaust oxygen and sends corrected air-fuel ratio to ECU to ensure emissions and economy. Installation difficulty: medium; lift vehicle and use special tools.