Sierra 18-99193 99193 Repalcement Racor Spin-On Fuel Water Separator Filter

Keep your marine engine running smoothly even in tough conditions with the Sierra 18-99193 replacement spin-on fuel water separator filter. Designed as a direct-fit alternative for Racor systems, this filter tackles the common headaches of fuel contamination head-on, ensuring cleaner fuel delivery and longer-lasting components. Boat owners and mechanics trust it for its reliable performance on the water, where every drop of fuel counts.

Standout Features That Deliver Real Results

• Water Filtration for Extended Life: Water drained from the collection bowl means less frequent changes, saving you time and hassle during maintenance seasons.
• Bowl O-Ring Included: No hunting for extra parts—everything you need comes in the box for a seamless swap.
• Superior Particle Removal: Captures 99% of particles down to ISO 19438 standards, blocking contaminants before they reach sensitive engine parts.

Why This Filter Protects Your Investment

In marine environments, fuel picks up water from condensation, rough seas, or poor storage, leading to rust, corrosion, and those dreaded "folded injectors" that sideline your vessel. This Sierra filter steps in early, separating water and trapping debris to shield injectors, pumps, and downstream filters. The result? Fewer breakdowns, smoother idling, and more days on the water without unexpected tow bills. It's not just a filter—it's proactive defense for diesel and gas engines in boats, generators, and auxiliary power systems.

How It Works in Your Fuel System

Fuel enters the spin-on element, where coalescing media forces tiny water droplets to combine and drop into the drainable bowl. Solid particles get caught in pleated layers, maintaining flow rates while hitting that 99% efficiency mark. Draining the bowl is straightforward, extending service intervals and keeping pressure drops minimal—ideal for high-demand applications like offshore fishing or long cruises.

Easy Integration and Maintenance Tips

Swapping this filter mimics an oil change: shut off fuel, relieve pressure, unscrew the old unit, and thread on the new one with the included O-ring for a leak-free seal. Pro tip: Check your service manual for torque specs to avoid over-tightening. Regularly inspect the bowl for water levels, especially after fueling in humid areas or extended layups. Pair it with quality fuel additives for even better protection against microbial growth.

Real-World Reliability from Sierra Engineering

Sierra's marine parts division draws from decades of boating expertise, crafting filters that match or exceed OEM specs without the premium markup. Anglers report cleaner starts after stormy trips, while commercial operators note reduced filter consumption across fleets. Always cross-reference Sierra's latest catalog for your exact engine model—compatibility ensures peak performance.