Attwood Universal Fuel/Water Separator Kit w/Bracket

The Attwood Universal Fuel/Water Separator Kit with Bracket (MPN 11840-7) protects small-engine fuel systems from water contamination—a critical failure point in marine, portable generator, and off-road equipment operation. Water in fuel causes corrosion, fuel line blockage, and engine stalling; this kit filters it out before it reaches the carburetor or injector. With a 10-micron filter element and universal 3/8-inch ports, it installs on virtually all 2 and 4-cycle gasoline engines without modification.

The kit includes a mounting bracket, dual brass connection ports for secure fuel line attachment, and a double-seal design that minimizes leakage during operation and storage. The 10-micron filtration standard removes water droplets and suspended particulates that bypass engine fuel tanks during extended storage, humidity exposure, or when fuel mixes with condensation. The included bracket allows fixed installation on engine blocks or in-tank housing, preventing hose kinking and fuel line stress—especially important for portable equipment subject to vibration or repeated transport.

This is standard equipment for small-craft operators, RV owners, emergency backup generator systems, and field equipment users who rely on seasonal or stored fuel. Known Mercury equivalent (35-6 series), this Attwood fuel water separator kit provides OEM-grade performance at accessible pricing. Routine inspection of the separator bowl alerts users to water accumulation before it damages engine internals, extending equipment service life and reducing downtime in critical situations.

Installation is straightforward on systems using standard fuel hose sizing; the universal port design fits most 3/8-inch barbed or threaded adapters. Replacement filter elements are widely available through marine and small-engine suppliers, keeping long-term maintenance cost low. For operators who demand reliability from backup systems or seasonal equipment, fuel water separation is foundational preventive maintenance.