Overview

The Attwood Marine 11820-7 is a universal in-line outboard fuel filter for carbureted engines. It uses a clear body so you can check fuel condition at a glance, and it fits 1/4", 5/16", and 3/8" fuel lines.

This is a disposable high-flow filter that helps catch contamination before it reaches the carburetor. It suits routine service on small fishing boats, runabouts, and other boats with carbureted outboards where quick inspection and easy replacement matter.

Key features

• Universal in-line fuel filter for 1/4", 5/16", and 3/8" fuel lines
• Made for most outboard motors with carbureted fuel systems
• Clear body lets you inspect fuel condition and visible debris without opening the line
• Disposable high-flow format keeps routine filter changes simple
• Body construction is impact-resistant and shatter-resistant for tough service conditions

Compatibility and fit

Before ordering, match your fuel hose inside diameter to one of the supported sizes and make sure you have room for an in-line filter body in the hose run. This filter is aimed at most carbureted outboard applications, so the main fit check is hose size and the existing service layout on the boat.

Installation and maintenance

The clear housing helps during winterizing, spring commissioning, or mid-season troubleshooting because you can spot contamination without taking the fuel line apart. Install it where it stays accessible for inspection and replacement, and use hose and clamps that match the line size already in the system.

Use on board

This is a good match for boaters who want a straightforward service filter on a carbureted outboard and prefer to keep fuel checks quick. It makes the most sense on boats using common 1/4", 5/16", or 3/8" fuel hose sizes.