Mercury – Fuel Line Assembly | Fuel System | Gray Low-Permeation Hose | 8M0079962

Overview

There’s a certain comfort that comes from gear you can rely on without thinking twice — especially when it’s tied directly to your engine’s heartbeat. One squeeze of the primer bulb and you know immediately if the fuel system is ready for the day. When it firms up smoothly and evenly, there’s a little wave of reassurance that settles over you. The Mercury Fuel Line Assembly 8M0079962 is built to deliver that exact feeling. Whether you’re sliding away from the dock at sunrise or making a steady run home through late-afternoon rollers, this assembly keeps fuel flowing clean and predictable, letting you relax into the rhythm of the water.

Key Features

• Five-sixteenth-inch inside diameter hose for consistent, reliable fuel delivery
• Low-permeation hose design reduces fumes and helps maintain fuel freshness
• Mercury-engineered primer bulb provides solid, dependable priming pressure
• Gray heat-reflective coating helps reduce vapor-lock risk
• Flexible marine-grade construction stands up to long-term sun, fuel, and weather exposure
• Works with various tank and engine connector styles
• Suitable for portable tanks, built-in systems, and custom rigging paths

Engine & Boat Compatibility

• Fits Mercury and Mariner outboards using universal five-sixteenth-inch fuel lines
• Ideal for small to mid-range horsepower engines across multiple production years
• Works well for aluminum fishing boats, pontoons, runabouts, skiffs, tenders, and inflatable boats
• Adapts smoothly to portable tanks and permanent installations when paired with the right connectors

Performance & Practical Benefits

You’ll feel the quality immediately. The primer bulb tightens with a clean, firm response that tells you fuel is moving exactly as it should. The hose routes through tight rigging spaces with ease, bends neatly around corners, and resists collapsing even when the boat hits chop or shifts weight. That natural flexibility keeps fuel flow steady, which translates into smoother starts and more controlled idle behavior.

On hot days, the gray coating reflects heat rather than absorbing it, helping stabilize fuel temperature and reducing the chances of vapor lock during long runs. Because the hose is low-permeation, you’ll notice less fuel odor and slower evaporation, especially helpful if your boat stays stored under a cover or in a shed between outings. Over time, the hose remains flexible instead of hardening or cracking, and the primer bulb maintains its strong, reliable squeeze season after season. It’s the kind of quiet reliability that makes boating feel simpler and more enjoyable.

Why Buy OEM

When it comes to your fuel system, genuine Mercury Marine parts truly make the difference. Everything about this assembly — from the reinforced hose blend to the internal check valves of the primer bulb — is engineered specifically for marine environments and Mercury engines. Aftermarket lines may look similar, but they rarely match the long-term durability, priming performance, or consistent fitment that Mercury delivers. Choosing OEM ensures the right fit, dependable function, and the peace of mind that your fuel system is built to the same standard as your outboard. It’s the practical choice for boaters who want fewer surprises and smoother days on the water.

FAQ

Q1: Which engines does the 8M0079962 Fuel Line Assembly fit?

It fits Mercury and Mariner outboards using a universal five-sixteenth-inch fuel line, once matched with the appropriate tank and engine connectors.

Q2: What makes this better than aftermarket options?

Mercury’s engineering provides stronger priming, more durable hose materials, and more reliable long-term performance.

Q3: How do I know it’s the right replacement?

Check that your fuel system uses a five-sixteenth-inch hose and identify which connector types you need. With the proper fittings, this assembly is usually a direct match.

Q4: Can this be used in both freshwater and saltwater?

Yes. It’s built to withstand long-term exposure in either environment.

Q5: Is installation straightforward for most boaters?

Absolutely. Add the correct connectors, route the hose neatly, secure it properly, and installation is simple.

Out on the water, the last thing anyone wants is to wonder if their fuel system is up to the task. This filter is purpose-built to handle Mercury and Mariner outboards, along with select MerCruiser sterndrives, so compatibility headaches aren’t part of the equation.

What makes it a smart choice:

• Designed specifically for remote-mounted applications with tight clearance.
• Captures water and fine particles before they reach sensitive engine components.
• Built with marine-grade materials for long-lasting performance in freshwater or saltwater.
• Maintains reliable fuel flow without restricting performance.
• It matches OEM fit and performance and integrates seamlessly into existing systems.

For anyone running Mercury power, keeping the fuel clean isn’t optional — it’s essential. This filter makes it easier whether you’re maintaining a workhorse engine or fine-tuning your weekend cruiser.