Description
SIERRA 10-Micron Mercury Fuel/Water Separator Filter with Blue Sensor – 18-7968 is a sensor-equipped 10-micron fuel/water-separator filter for specified Mercury/Mariner six-cylinder outboards using the blue water-in-fuel sensor configuration. It is used on later engine applications than the black-sensor 18-7967 family.
The correct sensor style must match the engine harness and filter-head arrangement. Current cross-reference data covers a broad 115–250 HP six-cylinder family and certain later Verado applications, so OEM part number or serial-number fitment should be confirmed.
Key Features
- 10-micron fuel/water-separator filtration
- Includes the blue sensor configuration
- For specified Mercury/Mariner six-cylinder outboards
- Supports water-in-fuel monitoring and particulate filtration
- Different sensor application from black-sensor Sierra 18-7967
Specifications
- Product type: Sensor-equipped fuel/water-separator filter
- Micron rating: 10 micron
- Sensor colour: Blue
- Application: specified Mercury/Mariner 6-cylinder outboards; verify exact serial range
- Fuel: gasoline
Interchange
- Mercury/Mariner: 35-184585, 35-18458A4, 35-18458Q4
- Later application cross-reference: Mercury 8M0095659, 8M0157616 (verify engine serial/application)

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