CARMOCAR Marine Fuel Water Separator S3213 — 10‑Micron Spin‑On Filter with Clear Nylon Bowl (Direct Fit for Mercury)

The CARMOCAR S3213 marine fuel water separator assembly is a spin-on, 10-micron fuel filter with a clear nylon collection bowl that removes water and debris from outboard fuel systems.

Keeping water and contaminants out of an outboard engine’s fuel system prevents rough running and premature component wear. This S3213 replacement assembly from CARMOCAR combines a reusable, transparent collection bowl with a high-efficiency 10-micron filter element to trap particles and separate emulsified water before it reaches the pump and injectors. It’s designed to match many common OEM part numbers for easy, direct-fit replacement.

How does this separator protect an outboard motor?

The assembly captures both suspended particles and separated water, stopping those contaminants from circulating through the fuel system. By isolating water in the clear bowl and trapping solids in the filter media, the unit helps maintain proper fuel delivery and reduces the risk of injector and pump wear.

• 10-micron synthetic fiber element filters fine particulates with over 92% efficiency.
• Clear nylon bowl lets you visually inspect water and sediment accumulation.
• Self-venting drain screw enables fast removal of trapped water without disassembly.

Which engines and part numbers does this S3213 assembly replace?

Designed as a direct replacement for multiple OEM fuel/water separator references, the CARMOCAR S3213 fits many popular outboard applications so you can swap parts without modification. Always verify fit by comparing OEM numbers or the original filter before purchasing.

• Compatible replacements include Mercury 35-60494-1 and 35-809097.
• Also replaces Racor S3213, B32013 and Yamaha MAR-24563-03-00 equivalents.
• Includes matching bowl and O-rings for part numbers 18-7922-1 and bracket 18-7853-1 replacements.

How do you install and service the S3213 fuel water separator?

Installation is a simple spin-on design that requires minimal tools and no special adapters for compatible models. Routine maintenance is straightforward: drain the bowl, replace the element when needed, and inspect seals to prevent leaks.

• Loosen the drain screw to evacuate collected water, then retighten.
• Spin off the old element, fit the new filter and hand-tighten per instructions.
• Run the engine briefly and check for leaks; replace O-rings as included in the kit.

What are the assembly’s material and performance highlights?

The unit pairs a transparent nylon collection bowl with a three-layer synthetic filter media built to separate emulsified water from diesel and gasoline blends. The bowl’s clarity and the screw drain design make routine checks and water removal quick, while the 10-micron rating focuses on protecting pumps and injectors from fine contaminants.

• Clear, reusable nylon bowl for visual monitoring of water level and debris.
• Three-layer synthetic fiber filter element offering >92% particulate capture at 10 microns.
• Kit includes bowl, filter element and two O-rings for a complete replacement.

Who is this for: Boat owners, marine mechanics and fleet managers who need a reliable replacement fuel/water separator for outboard engines will find this S3213 assembly suitable. It’s particularly helpful for anyone replacing Mercury, Racor, Yamaha or equivalent OEM parts who wants a transparent bowl for easy inspection and a high-efficiency 10-micron element to help protect fuel pumps and injectors during normal service intervals.