Sierra 18-7860 Fuel Filter for Mercruiser, OMC Engines
- Brand:
- Sierra
- Part no:
- 18-7860
Image: Fisheries Supply
Where to buy
The Sierra 18-7860 is a fuel filter cross-referenced to Mercury part number 35-49088A2. It covers engines from OMC, Chris-Craft, Mercury and Mercruiser. The fit is limited to inline 4 and 6 cylinder engines running AC fuel pumps, so check your engine's layout and pump before relying on it. Micron rating and flow are not stated, so confirm those elsewhere if they matter to you.
Our take
The 18-7860 has a narrow fit: inline 4 and 6 cylinder engines with AC fuel pumps from Mercruiser, Mercury, Chris-Craft or OMC. If your engine is a different layout or uses another pump, this is the wrong filter, so match the engine first.
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.