Sierra 18-7845 Marine Fuel Water Separator Filter 21 Micron

The Sierra 18-7845 is a long-style marine fuel water separator filter designed for high-performance gasoline engines in sterndrives, inboards, and 2-cycle and 4-cycle outboards. This filter provides essential protection against water contamination and particulate matter that can damage modern fuel systems.

Key Features:

• 21 micron filtration rating with over 90% efficiency at removing harmful particles
• Flows at 90 GPH to meet the demands of high-horsepower marine engines
• Successfully removes 99% of emulsified water found in ethanol-blended fuels
• Long filter design measuring 4.35 inches (110.5mm)
• Thread pitch: 11/16-16
• High pleat count filter element for maximum filtration surface area
• Steel end caps with heavy-duty spring construction
• Powder coated exterior and epoxy coated interior for corrosion resistance

Ethanol-blended fuels absorb more water and loosen more particulates than conventional gasoline, making proper filtration critical for every marine engine. This filter is ideal as a primary filter feeding a 10 micron or finer secondary filter to prevent premature loading with coarse debris. Replaces Mercury/Mercruiser 35-802893Q, 35-55501, 35-57250, 35-604941, 35-60494A5, 35-806771, 35-807172, and Yamaha ABB-FUELF-IL-TR.