BMW 7 Series Oxygen Sensor 11787539136 OEM Specification Replacement

For BMW 7 Series (E65/E66/E67, 2002-2008) with N62/N73 engines, including 730i to 760Li 3.0L-6.0L variants, this oxygen sensor (OEM 11787539136) monitors exhaust oxygen and feeds real-time air-fuel ratio signals to ECU to ensure combustion efficiency and emissions compliance. As an OEM sub replacement, its numbers can be cross-checked with original parts for precise match. Installation difficulty moderate; use a dedicated oxygen sensor socket and avoid thread damage.