Sierra 18-79960 Fuel Filter, Yanmar

Keep your Yanmar engine running smoothly on the water with the Sierra 18-79960 fuel filter, a reliable aftermarket solution designed specifically for marine diesel applications. This filter traps contaminants like dirt, rust, and water from your fuel supply, preventing clogs that could lead to power loss, rough idling, or complete engine failure during critical moments. Boat owners trust it for its durable construction that withstands harsh marine environments, ensuring consistent fuel flow and optimal combustion efficiency.

Perfect Fit for Yanmar Marine Engines

Engineered as a direct replacement for common Yanmar fuel filters, the Sierra 18-79960 integrates seamlessly with a wide range of models found in inboard diesels, generators, and saildrive systems. It's ideal for vessels where clean fuel is non-negotiable, from coastal cruisers to offshore fishing boats. By matching original specifications for thread size, gasket sealing, and filtration media, it installs without modifications, saving you time and hassle during routine service.

Superior Filtration for Peak Performance

What sets this filter apart is its high-efficiency media that captures particles as small as 10 microns, far surpassing basic filters in protecting injectors and pumps from wear. In diesel engines, where fuel quality varies with every tank-up, this level of protection extends component life and reduces downtime. Users report smoother acceleration, better fuel economy, and fewer service calls after switching to Sierra, making it a smart upgrade for proactive maintenance.

Easy Installation and Maintenance Tips

Replacing your fuel filter is a straightforward DIY task that takes under 30 minutes. Start by shutting off the fuel supply and relieving system pressure, then use a filter wrench to twist off the old unit counterclockwise. Clean the mounting base, apply a thin film of fuel to the new gasket for a secure seal, and hand-tighten plus a quarter-turn with a wrench. Pro tip: Always inspect fuel lines for cracks during replacement and change the filter every 100-200 hours of operation or annually, whichever comes first, especially if using biodiesel blends that can accelerate clogging.

• Relieve fuel pressure to avoid spills
• Prime the system post-install by cycling the fuel pump
• Monitor for leaks after starting the engine

Why Sierra Stands Out in Marine Parts

Sierra earns its reputation through rigorous testing that mimics real-world boating stresses—vibration, corrosion, and temperature swings. Unlike generic filters that might compromise on media quality, this one delivers OEM-level performance at a fraction of the cost, without sacrificing reliability. It's a favorite among mechanics for its consistent availability and no-fuss returns, helping you focus on what matters: enjoying time on the water.

Frequently Asked Questions