Mercury – Transom and Gear Case Anode Kit | Aluminum Corrosion Protection | 8M0116589

Overview

Every boater knows that corrosion never sleeps. It works quietly, slowly, and without mercy—especially if you spend your days on brackish water or push your Verado hard offshore. That’s why having the right anodes in the right places matters more than most people realize. The Quicksilver 8M0116589 Aluminum Anode Kit gives you that reassuring sense of protection, the kind that lets you focus on the water ahead instead of worrying about what’s happening beneath the surface. When your anodes are doing their job, everything else feels easier—your steering stays smooth, your hardware stays clean, and your engine lives the long, dependable life it was built for.

Key Features

• Provides critical corrosion protection for Mercury L6 350–400 horsepower Verado outboards (serial number 1B716557 and above).
• Kit includes aluminum anodes for both the transom bracket and the gear case.
• Designed for both freshwater and saltwater environments.
• Includes mounting hardware for a complete, straightforward replacement.
• Prevents corrosion of key aluminum and Stainless Steel engine components.
• Built to Mercury Marine’s original equipment specifications.

Engine & Boat Compatibility

• Fits select Mercury L6 Verado 350, 375, and 400 horsepower outboards.
• Works with engines carrying serial number 1B716557 and higher.
• Common on offshore center consoles, high-performance fishing boats, large pontoons, and coastal cruisers.
• Ideal for boats that spend long stretches in saltwater or remain docked for extended periods.

Performance & Practical Benefits

When an anode kit is doing its job, you’ll notice the lack of problems rather than the presence of them. Your hardware stays tight and secure. Your lower unit remains clean and unscarred. The engine’s aluminum surfaces keep their integrity, and you avoid the slow, grinding wear that can take years off an otherwise healthy motor.

This kit includes everything you need to replace your transom bracket and gear case anodes in one go. The aluminum material offers excellent protection without sacrificing longevity, and its ability to perform in both freshwater and saltwater makes it a true all-conditions choice. Installation is simple—just remove the old anodes, bolt the new ones in place, and you’re back to running confidently. A quick visual inspection a few times a season will tell you everything you need to know about their condition.

Why Buy OEM

If your engine is worth protecting, it’s worth protecting properly. Mercury’s OEM anodes are engineered specifically for your Verado’s metallurgy, ensuring they corrode at the right rate and in the right locations. Aftermarket versions may look the same, but slight differences in alloy composition can mean weaker protection—or none at all. Buying OEM isn’t about a logo; it’s about extending your engine’s life, keeping your performance sharp, and avoiding expensive repairs down the line.

For something as essential as corrosion protection, sticking with Mercury is simply the smart call.

FAQ

Q1: Which engines does the Mercury 8M0116589 Anode Kit fit?

It fits Mercury L6 Verado 350–400 horsepower outboards with serial numbers 1B716557 and above.

Q2: What makes this different from aftermarket anodes?

OEM anodes use specific aluminum alloys that match Mercury’s engineering requirements, providing full-coverage corrosion protection.

Q3: How do I know if this is the correct kit for my setup?

Check your engine’s serial number and match it to the compatibility range. Your owner’s manual will list the correct anode kit.

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

Yes, the aluminum alloy is designed for multi-environment protection.

Q5: Is installation straightforward?

Absolutely. Most boat owners can replace these anodes with basic tools and the included hardware.