CARMOCAR fuel filter & water separator S3227 — clear bowl, 3/8" barb x 1/4" NPT, 10-micron protection

The CARMOCAR S3227 is a compact fuel filter and water separator assembly with a clear inspection bowl and 3/8" barb x 1/4" NPT fittings designed for universal fuel and outboard marine applications.

The S3227 pairs a corrosion-resistant housing with a 10-micron synthetic fiber element to trap particulates and separate water from gasoline and diesel before they reach pumps and injectors. Its transparent bowl makes visual inspection fast and straightforward, while the service-friendly design allows easy replacement without electrical modifications. This assembly replaces several OEM numbers and fits many universal installations where a reliable inline fuel-water separator is needed.

How does the S3227 remove water and contaminants from fuel?

The S3227 combines mechanical filtration with gravity-assisted water separation. Fuel passes through a 10-micron synthetic filter that captures solid particles, and the clear bowl allows separated water and heavier debris to collect for visual monitoring and removal.

• 10-micron synthetic fiber media captures small particulates.
• Clear poly bowl shows water and debris accumulation.
• Gravity settling in the bowl separates free water from fuel.
• Serviceable element simplifies maintenance and replacement.

Will this assembly fit my outboard or small engine fuel line?

The S3227 is built for universal compatibility in many outboard and small-engine fuel systems. It features a 3/8" barb inlet/outlet for flexible hose connections and a 1/4" NPT thread where specified, making it adaptable to common marine and automotive plumbing setups.

• 3/8" barb fittings for standard fuel hose attachment.
• 1/4" NPT fitting compatibility for threaded connections.
• Replaces part numbers such as S3227, 18-7948, and 9-37882.
• Plug-and-play installation—no electrical changes required.

How do I service the S3227 and how long will it last?

Servicing the S3227 is straightforward: shut off fuel supply, drain the clear bowl, and replace the filter element when capacity or contamination is evident. The durable housing resists corrosion and oil exposure, and CARMOCAR provides a one-year customer service period for this assembly.

• Clear bowl with drain for easy water removal.
• Replaceable 10-micron filter element—follow OEM intervals.
• Durable materials resist friction, pressure, and leakage.
• One-year customer service coverage from purchase.

Which OEM parts does the S3227 replace and what comes in the package?

The S3227 serves as a replacement for several commonly referenced fuel filter and separator part numbers, making it useful for repairs and upgrades. The package ships as a complete assembly with the clear bowl and the 3/8" barb x 1/4" NPT fitting already installed.

• Replaces: S3227, 18-7948, 9-37882 and similar kits.
• Filter element equivalents: 490R-RAC-01, 320R-RAC-01.
• Clear bowl models replaced: 18-7922, 18-7922-1.
• Package includes one complete S3227 assembly ready to install.

Who this is for: The CARMOCAR S3227 is aimed at boat owners, small-engine mechanics, and DIYers who need reliable inline fuel filtration and visible water separation. It suits routine preventive maintenance or replacement on outboards, personal watercraft, generators, and other gasoline or diesel-fueled equipment where compact, serviceable filtration with standard hose and thread fittings is required.