Five Oceans 1/4" NPT Male Fuel Tank Connector — Brass 2-Prong for Yamaha & Pre-1998 Mercury, Ethanol-Compatible

Five Oceans FO4408 is a brass 1/4" NPT two-prong male fuel tank connector designed to mate with Yamaha female tank ends and pre-1998 Mercury female fittings.

This solid-brass connector replaces worn or damaged male tank ends on portable outboard fuel tanks and is engineered for marine use with ethanol-blended fuels. Its 1/4" NPT threaded tank interface and two-prong clip style make it compatible with common portable tanks and specific OEM female fittings from Yamaha and older Mercury models, restoring a secure, low-permeation fuel connection.

Will this connector fit my Yamaha or Mercury fuel tank?

Yes—this male connector was manufactured to pair with Yamaha female tank fittings and Mercury female fittings produced before 1998. It matches the common 1/4" NPT tank thread and uses the two-prong clip style that those tanks accept.

• Compatible with Yamaha female tank end connectors and Five Oceans FO2888 female connectors.
• Fits Mercury female tank ends from pre-1998 models and Five Oceans FO4910 female connectors.
• Works with original Mercury part numbers like 22-13563A3, 22-13563Q3, 22-14213M, 2214213Q.
• Designed for standard portable tank installations that accept 1/4" NPT threaded fittings.

How durable and fuel-compatible is this brass connector?

The FO4408 is machined from brass and built with materials that limit fuel permeation, making it suitable for gasoline and ethanol-blended fuels commonly used in marine applications. Brass provides corrosion resistance in marine environments and holds up to repeated connection cycles better than many lightweight plastics.

• Constructed from brass for corrosion resistance and mechanical strength.
• Low-permeation material reduces fuel evaporation and vapor loss.
• Compatible with ethanol-blended fuels used in modern outboards.
• Clip-style two-prong connection ensures stable retention during use.

How simple is installation and what else should I replace at the same time?

Installation is straightforward: thread the 1/4" NPT into the tank tank port and secure the fuel hose using the two-prong clip style coupling. While replacing the connector, it’s smart practice to inspect and, if needed, replace the fuel hose and primer bulb to eliminate leaks and restore reliable fuel delivery.

• 1/4" NPT threaded tank connection fits most portable tanks.
• Two-prong clip style makes hose attachment quick and secure.
• Recommended to replace old fuel lines and primer bulbs during installation.
• Use with Five Oceans female connectors FO2888 (Yamaha) and FO4910 (Mercury) for best compatibility.

Is this part suitable for boating use and which applications are typical?

The FO4408 is intended for small boats and portable fuel tank systems that use outboard engines. It’s especially useful for owners repairing or refurbishing portable tank connections on older Mercury outboards or standard Yamaha portable tank fittings.

• Commonly used on small recreational boats with portable fuel tanks.
• Ideal for repair or maintenance of Yamaha-compatible fuel systems.
• Matches older Mercury female fittings produced before 1998.
• Works with Five Oceans OEM-compatible parts and many portable tanks.

Who is this for: Boaters, marine technicians and DIY homeowners who need a reliable replacement male fuel tank connector for Yamaha tanks or pre-1998 Mercury female fittings will benefit from the Five Oceans FO4408. It’s suited for anyone restoring a portable fuel system, replacing degraded fittings exposed to ethanol-blended fuels, or upgrading to a brass, low-permeation connection for improved durability and leak resistance.