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Keep your marine engine running smoothly with the Sierra 18-78867 Fuel Water Separator Kit from Sierra Engine Parts. Designed as a reliable replacement for OEM fuel filtration systems, this kit effectively removes water, dirt, and contaminants from your boat's fuel line, preventing corrosion, injector damage, and costly breakdowns on the water. Whether you're powering through rough seas or cruising calm bays, this kit ensures clean fuel delivery for peak performance.
Opt for the innovative AquaVue™ clear bowls when installing outboards or above-deck systems. These transparent bowls let you monitor fuel condition at a glance, spotting water accumulation or filter clogs instantly. Ideal for easy maintenance during routine checks, they combine visibility with robust polymer construction that resists cracking and UV degradation.
For installations below deck, switch to the metal bowl collection to meet United States Coast Guard (USCG) regulations. These flame-resistant bowls provide superior fire safety while maintaining excellent filtration performance. Their rugged aluminum or steel builds handle high-pressure fuel lines and offer long-term reliability in confined, engine-room spaces.
Installing the Sierra 18-78867 kit is straightforward for DIY boaters or pros. Begin by shutting off fuel supply and relieving system pressure. Remove the old separator, attach the new assembly using provided O-rings and fittings, and prime the system before startup. Always match hose sizes and secure connections to avoid leaks.
To maximize lifespan:
Pro tip: Pair with a secondary filter for ultimate protection in diesel applications, extending engine life and reducing downtime.
Sierra Engine Parts stands out for precision engineering that matches or exceeds OEM specs, without the premium price tag. This kit has earned rave reviews from saltwater anglers, yacht owners, and commercial operators for its consistent performance in real-world conditions. By preventing water-related issues like rough idling, hesitation, or complete failure, it saves you from emergency tows and repair bills.
It removes water and debris from fuel, protecting injectors and carburetors from damage, which is crucial in humid marine environments where condensation is common.
AquaVue™ clear bowls are perfect for outboard motors and above-deck setups, offering easy visual checks for water separation without tools.
USCG rules mandate flame-resistant metal bowls in below-deck areas to minimize fire risks from potential fuel leaks or sparks.
Drain water monthly, replace elements every 100 hours or yearly, and inspect fittings seasonally for optimal performance.
Yes, it fits a broad range of outboards and inboards as an OEM alternative, but always verify hose and mounting specs for your model.
Absolutely—it eliminates water-induced issues like stalling, poor acceleration, and corrosion, keeping your engine reliable season after season.
Drain it immediately via the valve, check fuel source for contamination, and monitor—it's normal separation working as intended.
Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
US$40
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