Mercury – Aluminum Trim Assembly Anode | V10 Verado Series | Aluminum | 8M0204939

Overview

When you spend your weekends on the water, you learn fast which parts you can trust and which ones leave you worrying. Corrosion is one of those things you never see coming until it’s already done its damage, and once it starts, it spreads quietly. That’s why having the right anode in place matters so much. With the Mercury Marine part 8M0204939, you get the kind of protection that feels steady and reliable — the kind that lets you focus on the ride, not what might be happening beneath the surface. Knowing your engine is shielded gives you that calm, confident feeling every boater deserves.

Key Features

• Aluminum trim assembly anode designed to protect against galvanic corrosion.
• Engineered specifically for Mercury Five-point-seven-liter V10 Verado outboards.
• Suitable for three-hundred-fifty to four-hundred-twenty-five horsepower models.
• Constructed from high-grade aluminum for strong performance in saltwater environments.
• Replacement anode only; fasteners sold separately.
• Mercury Marine part number 8M0204939.

Engine & Boat Compatibility

This aluminum anode fits:

• Mercury Five-point-seven-liter V10 Verado outboards
• Horsepower range: three-hundred-fifty to four-hundred-twenty-five
• Works well for:
• Offshore center consoles
• Larger pontoons and tri-toons
• Multi-engine coastal fishing boats
• Heavy recreational cruisers that live in saltwater or brackish environments

Performance & Practical Benefits

Boaters rely on their engines in ways folks on shore don’t always understand. Saltwater is tough — it gets into everything, and if you don’t stay ahead of it, it’ll take its toll. This anode does the quiet work of stepping in and sacrificing itself so your engine doesn’t suffer. When installed correctly, it fits tight and secure against the trim assembly, creating a clean electrical path that draws corrosion away from expensive components.

You’ll notice the difference over time: smoother operation, fewer worries during haul-outs, and a steady sense that your outboard is holding up the way it should. Aluminum is the right call for saltwater because it erodes at a controlled pace that mirrors the demands of these environments. That steady wear pattern is your reassurance that the part is doing exactly what Mercury designed it to do — protect your investment without compromise.

Why Buy OEM

When it comes to corrosion protection, guessing isn’t an option. Aftermarket anodes often cut corners with inconsistent alloy mixes or sloppy machining, and that can leave your engine exposed. An OEM Mercury Marine part is built to the exact specifications your motor requires. It offers the proper alloy balance, the right fitment, and proven long-term performance. You’ll spend less time replacing parts, less time worrying, and more time enjoying the water. This is the kind of advice seasoned boaters share freely — stick with genuine parts, and your engine will thank you later.

FAQ

Q1: Which engines does the Aluminum Trim Assembly Anode 8M0204939 fit?

It’s designed for Mercury Five-point-seven-liter V10 Verado outboards ranging from three-hundred-fifty to four-hundred-twenty-five horsepower.

Q2: What makes this anode different from aftermarket options?

Its alloy composition, fit, and wear rate are engineered exactly for Mercury engines, ensuring accurate corrosion protection.

Q3: How do I know if this is the right replacement for my setup?

Check your horsepower rating and confirm your engine is a Five-point-seven-liter V10 Verado. Matching the part number is the best confirmation.

Q4: Can this be used in freshwater?

It can, but aluminum performs best in saltwater or brackish water. For freshwater, magnesium is usually recommended.

Q5: Is installation straightforward for most boat owners?

Yes. If you’re comfortable performing basic maintenance, replacing an anode is simple — just be sure to use the correct fasteners.