Mercury Marine fuel filter kit 149 micron – 35-87946K04 is a genuine OEM spare part for filtering dirt and impurities from the gasoline before the fuel reaches the engine's fuel system. The kit consists of a 149-micron filter screen and a Viton seal.
The fuel filter is mounted under the engine cowl in the older Mercury and Mariner filter housing with a screw-on bowl. It is intended for the earlier filter unit, where both the filter bowl and the top section are white.
The part is used on selected Mercury and Mariner outboard engines with the model designations 6, 8, 9.9, XR10, 10 Magnum, 10 Marathon, 10 Sea Pro, 10 Viking, 15, 15 Marathon, 15 Sea Pro, 15 Viking, 20 2-cylinder, 20 Jet, 25 2-cylinder, 30 2-cylinder, 40 2-cylinder, 40 Jet, 55 3-cylinder, and 60 3-cylinder.
Compatibility depends on the engine's serial number and the installed filter unit. Therefore, check the engine's spare parts catalog, serial number, and the existing filter housing before ordering.
Spare part number 35-87946K04 replaces the previous OEM numbers 35-87946T04 and 35-87946T3. The product is Mercury Marine branded and should not be confused with the separate Quicksilver variant.
Key featuresGenuine Mercury Marine OEM spare part
Spare part number: 35-87946K04
Filtration: 149 micron
Includes filter screen and Viton seal
For gasoline
For older, all-white filter housing with screw-on bowl
Replaces 35-87946T04 and 35-87946T3
Check engine serial number and filter unit before purchase
