AUIVERED Marine Fuel Water Separator R12T, 10‑Micron Filter — Clear Bowl, 1/4" NPT & M18x1.5

The AUIVERED R12T Marine Fuel Water Separator Kit is a 10-micron fuel filter assembly that removes water and contaminants to protect marine and compact diesel engines.

This R12T replacement kit from AUIVERED fits 1/4-inch NPT fittings and centers on the M18 x 1.5 thread, offering broad compatibility with many outboard motors, inboard diesel setups, tractors, skid steers and compact off-road equipment. Built for high flow and transparent monitoring, it separates water from gasoline and diesel while trapping particles down to the 4–10 micron range so engines run cleaner and maintenance is easier.

How does this kit keep fuel free of water and debris?

The R12T uses a combined mechanical filtration and water-separation design to remove particulates and let water collect in the transparent bowl. This dual-action approach reduces contamination passed to the fuel pump and injectors without requiring complex installation.

• 10-micron rated filter element for fine particulate trapping.
• Hydrophobic media and separation chamber let water settle in the cup.
• Clear cup enables visual inspection for water and sediment buildup.
• Manual drain/bleed allows controlled removal of collected water.

Will it fit my engine or equipment?

Designed for a 1/4-inch NPT inlet/outlet and an M18 x 1.5 center thread, this unit replaces many OEM part numbers and suits a wide range of small marine and off-road diesel engines. Check thread and port sizes before ordering to confirm compatibility.

• 1/4" NPT port interface for standard fuel lines.
• M18 x 1.5 center thread for direct replacement mounting.
• Cross-references include R12T, S3240, 18-7947, 17670-ZW1-030GH and others.
• Works with gasoline and diesel fuels in marine and compact equipment.

How does the flow performance affect engine operation?

AUIVERED engineered this separator for a high-flow capacity so fuel delivery remains steady under load. At up to 15 gallons per hour (57 L/h) with diesel, it supports continuous engine demand without restrictive pressure drop.

• Maximum flow: 15 gal/hour (57 L/hour) under diesel conditions.
• Low pressure drop preserves pump performance and throttle response.
• Suitable for small to medium displacement marine and agricultural engines.
• Helps avoid fuel starvation during sustained high-load operation.

How easy is maintenance and inspection?

The clear filter cup and straightforward fittings make routine checks and service fast. Designed for quick disassembly, the unit minimizes downtime so you can drain water and replace the element with basic tools.

• Transparent bowl for instant visual checks of water and sediment.
• Tool-friendly design for fast element changes and bowl removal.
• Manual drain valve simplifies water evacuation without full disassembly.
• Backed by a 1-year warranty for added confidence.

Who this is for: The AUIVERED R12T kit is aimed at boat owners, small-farm operators and owners of compact diesel or gasoline equipment who need a reliable, easy-to-service fuel water separator. It's a practical replacement for OEM units when you want clear fuel monitoring, solid filtration down to 4–10 microns, and a high-flow design that supports continuous operation during demanding use.