10 Micron Fuel Water Separating Filter 2 Pack

This is a trepb 10-micron fuel/water separating replacement filter twin pack designed to protect marine outboard engines by removing water and particulate contaminants from fuel.

Keeping fuel clean is essential for reliable outboard performance. These trepb filters are built to match common OEM dimensions and threaded fittings so they slide into existing housings for Yamaha, Sierra and other compatible outboards. Supplied as a two-pack, they offer a practical spares set for scheduled maintenance or multi-engine rigs.

How does this filter protect my outboard motor?

The filter traps water droplets and particles down to 10 microns, reducing the risk of corrosion and injector or carburetor blockage. By stopping contaminants before they reach the engine, it supports smoother idling and more consistent fuel delivery.

• 10-micron media captures fine particulates and suspended water
• Protects fuel pump, injectors and carburetors from abrasion
• Prevents deterioration caused by water contamination

Will these fit my Yamaha or Sierra fuel system?

trepb filters are made as direct-fit replacements for Sierra 18-7866 and Yamaha MAR-FUELF-IL-TR / MAR-10MEL-00-00, and they also fit Mallory 9-37807 housings. Check your current filter part number and the engine model to confirm compatibility before ordering.

• Direct replacement for listed OEM part numbers
• Compatible with many Yamaha 2- and 4-stroke outboards (120 HP and up)
• Verify part number and engine model to ensure correct fit

What are the size and installation details I should know?

Each filter has been manufactured to precise dimensions so it connects using the standard 11/16–16 thread. The compact height and outer diameter make these a straightforward swap-in for compatible housings and a simple DIY maintenance task.

• Height: 4.35 inches; Top outer diameter: 3.69 inches
• Thread: 11/16–16 standard marine fuel filter thread
• Sold as a convenient 2-pack to keep a spare on board

How often should I replace these filters?

Replacement interval depends on usage, fuel condition and seasonality; inspect each season and replace if contaminated or at manufacturer-recommended service intervals. Keeping a spare filter in the boat avoids downtime during routine changes.

• Replace if you detect water, fuel discoloration, or reduced engine performance
• Inspect at least annually or per your engine manufacturer’s schedule
• Two-pack helps maintain one filter installed and one as a ready spare

Who is this for: Boaters, marine technicians and weekend anglers who need a dependable OEM-compatible fuel/water separating filter for mid- and high-horsepower Yamaha outboards and other systems using the listed part numbers. The trepb 2-pack suits people who prefer keeping a spare on board, those performing routine seasonal maintenance, and anyone seeking a direct-fit aftermarket replacement with clear size and thread specifications.