Sierra 18-7865 Fuel Water Separating Filter 10 Micron for Yamaha Outboards

The Sierra 18-7865 is a high-performance fuel water separating filter designed for Yamaha 2-stroke and 4-stroke outboard engines up to 115 HP. This compact filter element features 10-micron filtration that effectively removes contaminants and separates water from fuel to protect your engine and ensure optimal performance.

Key Features:

• 10-micron filtration rating - over 90% efficient at removing particles as small as 10 microns
• Advanced water separation - removes over 98.8% of emulsified water from gasoline
• High flow capacity - flows at 90 GPH to support high-demand engines
• Optimized for ethanol-blended fuels that absorb more water and particulates
• Compact design for easy installation with Sierra 18-7774 bracket
• Marine-grade construction for durability and corrosion resistance

Modern ethanol-blended fuels absorb more water and loosen more particulates than traditional gasoline, making proper filtration essential for engine protection. The Sierra 18-7865 delivers efficient filtration without restricting fuel flow, ensuring clean fuel delivery even to the most demanding marine engines. This filter replaces Yamaha OEM part numbers MAR-MINIF-IL-TR and MAR-MIOAS-00-00, and is interchangeable with Mallory 9-37808.