Attwood Marine Thread-to-Barb Connector, For 500-800 GPH Pumps, 3/4 in ID Hose, 3/4-14 NPSM

Overview

The Attwood Marine 3899-1 is a straight hose connector for 3/4 inch ID hose, used where you need to join hose to a threaded drain or pump port without adding a 90 degree turn. It has a threaded connection on one side and a 3/4 inch hose barb on the other, which makes it a common fit for Attwood 3888 drain fittings and A-Series aerator pump intake or outlet ports.

The body is made from acetal, a practical material for plumbing points that stay exposed to moisture, splash, and normal vibration on board. The straight layout works well when the hose run already lines up with the fitting, so routing stays simpler around livewell, aerator, and drain plumbing.

Key features

• Fits 3/4 inch ID hose on the barbed side
• Threaded side matches Attwood 3888 drain fittings and A-Series aerator pump intake or outlet ports
• Straight connector layout for in-line hose runs where an elbow is not needed
• Acetal construction suited to wet plumbing areas on boats

Compatibility and fit

Check the hose inside diameter before ordering, since this connector is sized for 3/4 inch hose. It is a good match when you are replacing an existing straight fitting in an Attwood-style drain or aerator setup and want to keep the same hose size and connection style in place.

Installation and setup

Slide the hose fully over the barb and secure it with the clamp size that matches your hose and system. The straight body works best where the hose can leave the fitting in a direct run with minimal bend, which can help reduce kinks and strain near the pump or drain connection.

Use on board

This connector suits small plumbing runs in livewell, aerator, and drain systems where 3/4 inch hose is already specified. It is a sensible replacement part for boat owners who need the original straight connection style rather than changing hose routing or adapting to a different fitting layout.

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