Mercury – Quicksilver Fuel Line Connector | Fuel System Component | Bayonet-Style Brass Fitting | 30185Q3

Overview

If you’re running a classic portable fuel tank setup, you know how important a clean, secure connection is. The Mercury Marine 30185Q3 Quicksilver Fuel Line Connector is made for vintage 6.6-gallon fuel tanks, giving you a tight, dependable link between the tank and your fuel hose. Its bayonet-style twist-lock design ensures smooth fuel flow and a solid fit, while the included barbed hose fitting and snap clamp make installation quick and simple. It’s a small part, but it keeps your classic Mercury setup performing like it should — smooth, steady, and leak-free.

Key Features

• Purpose: Connects your portable fuel hose to earlier 6.6-gallon Mercury fuel tanks.
• Design: Bayonet-style twist-lock connector for a secure, no-leak fit.
• Material: Built from marine-grade brass and composite to resist corrosion and wear.
• Included: Comes with barbed hose fitting and snap-type hose clamp for easy installation.
• Performance: Maintains consistent fuel flow for reliable engine performance.
• Compatibility: Fits vintage 6.6-gallon Mercury fuel tanks used with older Mercury and Mariner outboards.

Engine & Boat Compatibility

• For use with earlier 6.6-gallon Mercury and Mariner portable fuel tanks.
• Ideal for classic aluminum boats, fishing skiffs, and small runabouts using portable fuel systems.
• Works with standard fuel hoses featuring 5/16" or 3/8" I.D.
• Suitable for both freshwater and saltwater environments.

Performance & Practical Benefits

The 30185Q3 connector is built to do one job — deliver clean, steady fuel to your engine without leaks or air intrusion. Its bayonet-style locking system ensures a firm seal, and the included barbed fitting makes for a quick, tight connection to your fuel line. The result is a smooth, reliable fuel supply that keeps your outboard running efficiently and easy to start.

The corrosion-resistant brass and composite construction stands up to ethanol-blended fuels, salt exposure, and long seasons in the sun. It’s a dependable upgrade or replacement for older, worn connectors that may have started to loosen or leak over time.

Why Buy OEM

The Quicksilver 30185Q3 is a genuine Mercury Marine part, designed to match the original fittings used on older fuel tanks. Unlike universal connectors, it locks in firmly, aligns perfectly, and maintains proper fuel pressure for Mercury and Mariner outboards. Aftermarket options can lead to leaks, uneven flow, or poor sealing — problems that can strand you or damage your engine over time.

Mercury OEM parts are built for real-world use: salt, sun, and constant vibration. It’s the right choice if you want the fit and performance your outboard was designed for.

FAQ

Q1: What tanks is this connector designed for?
It fits earlier 6.6-gallon Mercury and Mariner portable fuel tanks.

Q2: What comes with it?
It includes a barbed hose fitting and snap-type hose clamp for a secure fuel line connection.

Q3: Is it compatible with ethanol-blended fuels?
Yes — it’s made from materials resistant to ethanol corrosion and fuel degradation.

Q4: Why replace the connector?
Old connectors can leak, cause hard starts, or introduce air into the system. Replacing it restores a tight, reliable seal.

Q5: Why OEM over aftermarket?
OEM fittings like this one ensure proper alignment, seal integrity, and long-term reliability in all marine conditions.