Heurofosh Sprayless Fuel Quick-Disconnect Coupler Set 8838US6 — Male & Female for 3/8" and 5/16" Hoses, Automatic Check Valve

Heurofosh 8838US6 is a two-piece, sprayless fuel line connector set (male + female) that fits 3/8" and 5/16" hoses and shuts off flow automatically when disconnected.

Whether you’re refueling a small boat, swapping tanks on a portable engine, or maintaining an onboard fuel system, a reliable quick-disconnect that prevents spills and keeps fuel sealed is essential. The Heurofosh 8838US6 pairs a male and female coupling designed to mate cleanly without spray, and the female half includes a built-in check valve to stop fuel flow the instant it’s separated.

How does this connector stop fuel from spraying when I disconnect?

The female coupling contains an internal check valve that seals as soon as the connection is broken, isolating the fuel in the line and minimizing drips or spray. The male and female bodies are machined to engage snugly so there’s minimal open volume during separation.

• Built-in automatic check valve in the female piece that closes on disconnection
• Precision fit between male and female bodies to reduce residual leakage
• Designed for fuel systems to limit exposed fuel during uncoupling

Will this fit my fuel hose: 3/8" or 5/16"?

Yes — the Heurofosh 8838US6 is compatible with both 3/8" and 5/16" fuel lines, making it a flexible option for a range of small-engine and marine setups. Use the appropriate hose size for a secure clamp-on installation and confirm inner diameters before fitting.

• Works with standard 3/8" and 5/16" fuel hoses commonly found in marine and portable engines
• Requires correct clamp or crimp for a reliable hose-to-barb connection
• Suitable for replacing worn quick-disconnects or creating a new service line

How durable and safe is the connector in regular marine or outdoor use?

These connectors are built to withstand the demands of fuel-handling environments; materials and construction focus on secure sealing and resistance under everyday use. The automatic valve feature enhances safety by preventing unwanted fuel flow when the halves are separated.

• Sturdy construction intended for recurring connect/disconnect cycles
• Valve mechanism reduces risk of spills and fuel exposure during service
• Appropriate for boat decks and other outdoor fuel applications with routine maintenance

What’s included and how simple is it to install?

The package contains both a male and a female connector so you have a complete coupling set for fuel line work. Installation is straightforward: slide the hose onto the barb, secure with a clamp or crimp sleeve, and mate the two halves when ready; no special tools are required beyond standard hose clamps and cutters.

• Complete set: one male connector and one female connector
• Connects to barbed hose ends; use hose clamps or crimps for a leak-free seal
• Quick mate/demate action for fast service, refueling, or storage

Who is this for? The Heurofosh 8838US6 suits boat owners, small engine technicians, and DIYers who need a dependable quick-disconnect for fuel lines that minimizes spills. It’s especially useful for anyone who swaps fuel tanks, services engines on the water, or wants a straightforward, durable connector pair that works with both 3/8" and 5/16" hoses. Regular inspection of hose clamps and the valve seating will keep the assembly performing safely over time.