Sierra 18-7989 10 Micron Fuel Filter Element, Cobra EFI
- Brand:
- Sierra
- Part no:
- 18-7989
Image: Fisheries Supply
Where to buy
Specifications
- Micron rating
- 10 micron
This is the Sierra 18-7989, a 10 micron replacement fuel filter element of the Cobra EFI type, carrying the reference 502906. It is sold as an OMC replacement and covers Universal and Johnson/Evinrude applications. The 10 micron rating defines the element, and the Cobra EFI type tells you which housing it is meant for. The range also comes in a 20 micron size, so check the micron rating and the 502906 reference against the filter you are replacing.
Our take
The 10 micron rating and the Cobra EFI type, reference 502906, are what identify this element. Compare both with the filter you are replacing, since the same range also comes in 20 micron and in other housing types.
From our buying guide
Parker lists Racor's marine Turbine Series for diesel and biodiesel engines, and Racor says gasoline filters in an enclosed location should use a metal bowl. A micron rating means little without its efficiency.
Check before you buy:
- The efficiency is stated with the micron size. Racor labels its finest element 2 micron and rates it at 98% at 4 microns.
- You know your engine's change interval, since intervals are per model.
- You can fit it on the suction side of the fuel transfer pump, where Racor says to install its 900MA and 1000MA, since pumps emulsify water.