Description
Quicksilver 8M2003959 Exhaust Oxygen O2 Sensor MerCruiser EC Engines
Quicksilver 8M2003959 exhaust oxygen sensor is a replacement component for the marine engine applications listed below.
Key Features
- Engine exhaust oxygen sensor for the specified MerCruiser EC applications.
- Supplied with wire leads, as listed in the Quicksilver brandstore.
Fitment & Applications
MerCruiser EC engines, including the sterndrive applications specified by Quicksilver. Confirm the engine model, serial number and sensor position in the service manual or parts catalog.
Product Details
- Brand: Quicksilver
- Part number: 8M2003959
- Condition: New
- Engine style: Inboard/IO
What's Included
One exhaust oxygen sensor with wire leads.
Service Notes
Follow the engine service manual for installation and adjustment. Match the exact part number, model and serial number before installation.
Why You Should Buy
A Quicksilver replacement for servicing the specified engine system with the correct catalog part.
Common Applications
Replacement of a worn or damaged exhaust oxygen sensor on the listed marine engine applications.
FAQs
Will this fit every engine of the listed size?
Verify the model, serial number and parts diagram; engine size alone does not establish fitment.
What is included?
One exhaust oxygen sensor with wire leads.



