This Seachoice Fuel/Water Separator Filter is a direct replacement for Sierra 18-7866 and Yamaha Outboard filters, and it reliably filters water and solid contaminants out of the fuel system to ensure the engine operates with premium efficiency. This 10-micron, high-efficiency filter meets OEM specifications. This filter is backed with a 1-year warranty. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.