Description
SIERRA 10-Micron Fuel/Water Separator Kit, 1/4-inch Aluminum – 18-7983-1 is a compact fuel/water separator assembly using Sierra’s short 10-micron spin-on filter and an aluminum mounting head. It is intended to protect marine gasoline fuel systems by removing water and particulate contamination before fuel reaches carburetors or injection components.
This Sierra service part is intended for the application described below. Match hose size, connector style, engine family, drive model, or OEM reference number as applicable before installation.
Key Features
- 10-micron short spin-on filter
- Aluminum mounting head for corrosion-resistant marine service
- 1/4-inch threaded fuel ports
- Published flow rating up to 90 GPH
- Includes mounting head, filter and pipe plugs
Specifications
- Filter rating: 10 micron
- Filter style: Short spin-on
- Head material: Aluminum
- Port size: 1/4 in.
- Included Sierra parts: 18-7944 filter and 18-7853-1 bracket/head
Interchange
- Mercury/Mariner 35-802893A4
- Mercury/Mariner 35-802893Q4
- Mercury/Mariner 35-60494A1
- Mercury/Mariner 35-60494A4
- Mercury/Mariner 35-807172A4
- Mercury/Mariner 35-52456A1
- Mercury/Mariner 35-55501A1
- Mercury/Mariner 35-57250A1



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