SEACHOICE Fuel Water Separator Filter for Yamaha Outboards, 10‑Micron Water‑Separating Canister

Keeping fuel clean is essential for reliable outboard performance. This SEACHOICE canister is engineered to fit Yamaha applications and replace Sierra part 18-7866, providing a high-efficiency barrier against water and solid contaminants that can harm injectors, carburetors, and fuel pumps. Built to meet original equipment specifications and supported by a one-year warranty, it’s a practical, boat-ready option for routine maintenance and repairs.

How does this filter protect my outboard engine?

The canister captures both free water and solid debris before they reach sensitive engine components. By trapping contaminants at a 10-micron rating, it reduces the risk of clogging and helps maintain smoother fuel flow and combustion. Regular replacement preserves engine efficiency and can prevent fuel-related starting or running issues.

• 10-micron media captures small particulates and emulsified contaminants
• Water-separating design sheds free water from fuel lines
• Direct-fit form factor replaces Sierra 18-7866 and fits Yamaha outboards
• Helps protect fuel pumps, injectors, and carburetor passages

Will this fit my Yamaha outboard and how easy is installation?

This SEACHOICE canister is made as a direct replacement for Yamaha outboard models that accept the Sierra 18-7866 style filter. Installation follows standard spin-on/outboard filter procedures and can be completed with basic tools. Always consult your engine manual for specific model compatibility and torque recommendations.

• Formulated as a direct swap for Sierra 18-7866
• Same mounting and sealing dimensions for straightforward replacement
• Simple hand-tighten and torque per manufacturer guidance
• One-year warranty supports initial parts confidence

How often should I replace this fuel/water separator?

Replacement frequency depends on operating conditions and fuel quality; typical marine practice is to inspect the filter each season or every 100 hours of operation. If you observe water accumulation, fuel discoloration, or reduced performance, replace the canister sooner. Using fresh, treated fuel also extends service life.

• Inspect at least annually or every 100 running hours
• Change immediately if water or heavy debris appears
• Replace before long-term storage to avoid varnish buildup
• Compatible with routine fuel treatment and maintenance schedules

What performance standards and warranty does this filter carry?

SEACHOICE designs this canister to meet OEM-level filtration expectations with a 10-micron rating, providing reliable separation of water and solids from marine fuel. The product is backed by a one-year limited warranty to cover manufacturing defects, giving buyers added assurance for normal use. It’s part of SEACHOICE’s line of affordable marine replacement parts tailored for boaters.

• 10-micron high-efficiency filtration meets OEM-style standards
• Manufactured for compatibility with Yamaha/Sierra filter specifications
• One-year warranty covers defects under normal service conditions
• Produced by SEACHOICE, a marine-focused replacement-parts brand

Who is this for: The SEACHOICE Fuel Water Separator Canister is intended for boat owners, anglers, and marine mechanics who operate Yamaha outboards or use Sierra 18-7866 compatible filters. It’s a practical choice for routine maintenance, winterization, and on-the-water servicing when dependable fuel cleanliness matters most.