OEM Quicksilver MerCruiser EC Exhaust Oxygen Sensor – 8M2003959
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Description
Description
Quicksilver 8M2003959 is an exhaust oxygen sensor for compatible MerCruiser EC sterndrive engines.
Product details
- Manufacturer part number: 8M2003959.
- Includes the sensor and wire leads.
- Factory diagrams include selected 3.0L MPI EC and 4.3L MPI Alpha/Bravo EC applications.
Fitment and selection
Match the engine serial number, connector and sensor location in the factory exhaust or electrical diagram. Sensor quantity and position vary by engine; this listing is not a complete engine sensor set.


