OEM replacement rear oxygen sensors for E65/E66 7-Series platforms. Direct fit sensors maintain proper air-fuel ratio monitoring and emissions compliance. Engineered to factory specifications for reliable long-term performance.
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Key Features
Factory fitment - Mounts at OEM locations without modification or adapters
Emissions monitoring - Maintains proper oxygen sensor signal for catalyst and engine management systems
Left and right pair - Both rear sensors included for complete replacement
Specs
Configuration: Rear oxygen sensor pair (left and right)
Condition: New
Whats Included
Rear left oxygen sensor
Rear right oxygen sensor
Frequently Asked Questions
Do these sensors plug directly into the factory wiring harness?
Yes. These mount at the factory sensor locations with OEM connectors — no adapters or wiring modifications needed.
Will my check engine light go away once I install these?
If your light was triggered by a faulty rear oxygen sensor, yes. If it's caused by a different fault code, get a diagnostic scan first to confirm the sensor is the issue.
Can I replace just one sensor, or do I need both?
You can replace one, but since they age at similar rates, replacing both at the same time prevents a second sensor failure shortly after. This pair covers both rear positions.