Mercury – Fuel Line Hose | 3/8 Inch Marine Fuel Line | Gray Polymer Construction | 8M0038563

Overview

There’s a certain comfort that comes from knowing your fuel system is dialed in and ready for whatever the day brings. When you’re pushing away from the dock before sunrise or easing back toward shore after a long afternoon, you want every part of your setup to feel dependable. A good fuel line might not be the flashiest piece of gear on your boat, but when it’s right, everything else feels right too. The Mercury Marine part number 8M0038563 fuel line hose is one of those quiet, trustworthy components that keeps your engine breathing steady, even when the water or weather has other plans.

This is the kind of line you install once and stop thinking about—because it simply works. Smooth, flexible, and built for the long haul, it’s made for boaters who want reliability without fuss.

Key Features

• Designed to deliver a consistent, safe flow of fuel.
• Constructed from durable gray polymer hose built for marine environments.
• Low-permeation material helps keep fuel where it belongs.
• Standard 3/8 inch (9.5 mm) inside diameter fuel line.
• Sold in a 100-foot bulk spool, ready for multiple installs or full-system replacements.
• Gray finish helps reduce vapor lock caused by heat and sun exposure.

Engine & Boat Compatibility

• Works with Mercury, Mariner, Force, and MerCruiser engines requiring a 3/8 inch fuel line.
• Ideal for outboards in the mid-range horsepower category.
• Suitable for sterndrive fuel systems using traditional primer bulb configurations.
• Commonly used on fishing boats, center consoles, pontoons, runabouts, and small cruisers.

Performance & Practical Benefits

When you install a quality fuel line, you’ll notice it the first time you squeeze the primer bulb. The feel is firmer, smoother, and more responsive. That same steady reliability continues when the engine fires up and settles into a clean idle without sputtering or starving for fuel.

This Mercury Marine hose stays flexible without getting gummy or brittle, even after long stretches of heat or exposure on the water. It doesn’t kink easily, and it lays cleanly along rigging paths, making installations feel tidy and intentional rather than forced. The low-permeation material means fewer fuel odors wafting around your transom and better efficiency over time.

On rough days, when the chop rattles every bracket and bolt, this hose keeps fuel delivery steady. On calm evenings, it disappears into the rigging and does its job quietly. That’s the kind of marine gear most boaters appreciate—equipment that contributes to a smooth, confident ride without calling attention to itself.

Why Buy OEM

Choosing a genuine Mercury Marine part means you’re getting something designed by the same people who built the engines it supports. This hose meets strict factory standards, and that shows in its long-term performance. Aftermarket lines might fit, but they rarely match the durability, consistency, or heat stability of OEM construction.

When you buy Mercury, you’re investing in less maintenance, fewer surprises, and better long-term value. It’s the kind of choice seasoned boaters make because they’ve learned the hard way that fuel systems are not the place to cut corners.

FAQ

Q1: Which Mercury engines does this fuel line fit?

It works with any Mercury, Mariner, Force, or MerCruiser engine using a 3/8 inch inside diameter fuel line.

Q2: How is it different from aftermarket hose?

OEM hose maintains strength, flexibility, and low permeation much longer, especially in heat and sunlight.

Q3: How do I confirm this is the correct size?

Check your current line diameter or your engine owner’s manual. If your system uses 3/8 inch hose, this is the right fit.

Q4: Can I use it in saltwater?

Absolutely. Its material resists swelling, cracking, and sun exposure in both fresh and saltwater.

Q5: Is installation simple?

Yes. It cuts cleanly, routes easily, and clamps securely with standard marine fuel line clamps.