S3213 Fuel Filter Marine Fuel Water Separator With Clear

The AULDAY S3213 is a direct-fit marine fuel filter and water separator with a clear bowl designed to remove water and contaminants from outboard motor fuel systems.

Keeping fuel dry and clean is essential for reliable outboard engine performance; the AULDAY S3213 replaces multiple OEM part numbers so you can restore fuel-system protection without modification. Built with three-layer synthetic filter media and a transparent collection bowl, this replacement element traps particulates and separates free water while letting you monitor contamination visually.

How does the S3213 remove water from my boat's fuel?

The S3213 uses a combination of mechanical filtration and gravity separation. Fuel passes through the synthetic multi-layer media that captures particles, while heavier water droplets collect in the clear bowl below for manual removal.

• Triple-layer synthetic filter paper captures fine particulates.
• Clear bowl provides immediate visual inspection for water and debris.
• Gravity separation design encourages water to settle away from the fuel flow.

Will this filter fit my outboard motor and replace the OEM model?

Yes — the S3213 is manufactured as a direct-replacement for a wide range of OEM numbers, allowing a plug-and-play swap without altering fuel or electrical systems. Confirm compatibility by comparing the listed replacement numbers to your existing filter label.

• Direct-fit for OEM references including 35-60494-1, 18-7932-1, 35-809097 and others.
• No electrical modifications required; install as a one-to-one replacement.
• Recommended to pre-fill the dirty side with clean fuel before first start to ease priming.

What materials and build quality protect my engine?

The element uses an Italy-sourced, three-layer synthetic fiber media engineered for durability and consistent flow. This construction reduces abrasive wear on pumps and injectors and helps maintain fuel efficiency by delivering cleaner fuel to the engine.

• Synthetic fiber media resists breakdown and captures microscopic contaminants.
• High-performance design suitable for demanding marine operating conditions.
• Robust bowl and seal components to prevent leaks under vibration and tilt.

How should I install and maintain the replacement filter?

Installation is straightforward: remove the old filter, install the AULDAY S3213 in the same orientation, pre-fill the inlet side with clean fuel, then prime and start the engine while checking for leaks. Regular inspections of the clear bowl let you know when draining or replacement is necessary.

• Do not reuse the old element — always replace with a new unit for reliable protection.
• Prime the fuel system after installation and inspect for leaks for several minutes.
• Periodically check the clear bowl and drain water as soon as it accumulates.

Who is this for: Boat owners and marine technicians who need a reliable, OEM-compatible fuel filter and water separator for outboard motors. The AULDAY S3213 suits anyone replacing worn or contaminated filters, performing routine fuel-system maintenance, or upgrading to a clear-bowl, easily inspected separator. It’s especially useful for recreational boaters, fishing vessels, and service shops that require a high-quality, direct-fit replacement that restores proper filtration and water separation without modification.