Fuel Water Separator Assembly 

Key Features:

• Sierra fuel water separators remove over 99.8% of emulsified water from your gasoline
• Sierra's 10 micron filters are over 90% efficient at removing particles as small as 10 micron
• All filters flow at 90 GPH to feed even the hungriest motor
• Prevent damage to sensitive inboard, sterndrive and outboard fuel injection systems

Additional Details:

• Material: Aluminum (High Capacity Filter)
• Rating: 10 Micron
• Size: 1/4" or 6.4mm

Interchanges/Replaces

Yamaha Outboard

• MAR-SEPAR-AT-OR

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-7866	Mallory 9-37807 Yamaha Outboard MAR-FUELF-IL-TR	1	Fuel Filter		N/A
18-7853-1	GLM 25000 Mallory 9-37860 Mercruiser Stern Drive 55481 89876 89876A3 Yamaha Outboard MAR-FLTHD-AL-12	1	Fuel Water Separator Bracket		N/A
18-4256	Mallory 9-40545	2	Pipe Plug		N/A