Oxygen Sensor 8M0095468 – Fits Mercury 175–600HP

How to Match This Part

This aftermarket oxygen (O2) sensor replaces Mercury Marine 8M0095468, which Mercury superseded to 8M0142695. It threads into the exhaust path on selected late-model Mercury outboards and MerCruiser 4.5L MPI sterndrives and reports exhaust oxygen so the ECM can hold closed-loop air/fuel control. A failed sensor commonly causes rich running, poor fuel economy, and stored fuel-system codes.

Match this part in this order:
1. Engine serial number — Mercury outboards: transom bracket or cowling ID plate; MerCruiser: engine block or flame-arrestor cover plate
2. Model family and horsepower — confirm your row in the compatibility table below
3. OEM number on the removed sensor — 8M0095468 or 8M0142695

Physically this listing is one brand-new sensor: threaded probe with protective tip cap, hex flats for an oxygen-sensor socket, black corrugated lead sleeve, and a sealed multi-pin connector with side mounting clip. Compare the connector and lead to the part you remove, and see the product images for the exact form. This unit is new, not remanufactured.

Part Number Cross-Reference

Mercury replaced 8M0095468 with 8M0142695 as a functional supersession for the same service position. Either number on your removed sensor points to this application.

Part numbers are listed for identification only. This is an aftermarket part manufactured by JLM Marine and is not sold as a genuine Mercury component.

Compatible Engine Models

Confirm model and serial before ordering. Mercury publishes this sensor by serial break, not by model year. Outboard serial location guide: Mercury Serial Number Guide. Engines below the listed starting serial use a different sensor.

Technical Specifications

Installation Guide

1. 1 Stop the engine and let the exhaust cool completely, then disconnect the battery negative cable before opening the harness.
2. 2 Trace the existing sensor lead to its harness plug, release the lock, unplug it, and free the lead from retaining clips.
3. 3 Unscrew the old sensor with a slotted oxygen-sensor socket so the lead is not twisted, then clean the boss threads.
4. 4 Compare thread, hex, lead routing, and connector shape with the new sensor. Remove the protective tip cap only at installation and never touch the sensing element.
5. 5 Thread the sensor in by hand, then torque to the value in your engine service manual. Keep anti-seize and sealant off the sensing tip and out of the exhaust port.
6. 6 Route the lead clear of heat and moving parts, lock the connector, reconnect the battery, clear stored codes, and confirm the engine returns to closed-loop fuel control.

Note: Professional installation is recommended for exhaust and fuel-management components.

Troubleshooting & FAQ

Important Notes

• Serial number breaks matter. Confirm your engine serial is at or above the listed starting number before ordering.
• Leave the protective tip cap on until installation. Keep oil, sealant, and anti-seize away from the sensing element.
• Professional installation is recommended for exhaust and closed-loop fuel-control components.

Why Choose JLM MARINE?

• Precision Fit: Cross-referenced to Mercury 8M0095468 / 8M0142695 oxygen-sensor applications on selected Verado-family outboards and MerCruiser 4.5L MPI.
• Quality Control: Each batch is inspected for dimensional consistency and workmanship.
• Direct from Manufacturer: Aftermarket marine parts engineered for reliable exhaust oxygen sensing on Mercury closed-loop fuel systems.