Mercury – 100 Hour Maintenance Kit | Alpha One Sterndrive Series | OEM Components | 8M0147054

Overview

When you run an older MerCruiser sterndrive—one that has carried you through years of long weekends, early launches, and glass-calm sunsets—you come to appreciate the importance of proper upkeep. A good maintenance routine keeps those engines feeling familiar and trustworthy, the way a seasoned boat should. The Mercury 8M0147054 100 Hour Maintenance Kit delivers everything you need to give your Alpha One sterndrive the kind of attention that keeps it running smooth and steady. It’s the sort of kit that lets you close the engine hatch knowing things are handled the right way.

Key Features

• Complete 100-hour service kit for MerCruiser Alpha One sterndrives
• Includes sterndrive install gasket kit for secure sealing
• Aluminum anode kit to help combat corrosion in marine environments
• Gearcase drain seals for leak-free gear lube changes
• OEM-engineered components designed for strong, reliable fitment

Engine & Boat Compatibility

• Designed for MerCruiser Alpha One sterndrives from 1984–1990
• Works with many runabouts, sport boats, classic sterndrive setups, and older cruisers
• Suitable for both inland lake boating and coastal use when paired with proper anodes

Performance & Practical Benefits

Older boats have their quirks, but they also have character—and with the right maintenance parts, they run with surprising confidence. This kit helps you keep it that way.

The install gasket kit ensures your sterndrive seals tightly, reducing the chance of water intrusion and keeping everything aligned the way Mercury intended. The aluminum anodes protect your drive from corrosion, a small detail that pays off big when you boat in mixed or saltwater conditions. And the gearcase drain seals give you a clean, secure service when replacing your gear lube, helping your drive shift smoothly and operate quietly.

Everything in this kit fits the way it should, making the service straightforward whether you handle it yourself or bring it to your local tech. When the job’s done, your sterndrive feels tight, steady, and ready for another season on the water.

Why Buy OEM

With older drives, proper fitment matters more than ever. Mercury OEM parts are engineered for your exact Alpha One specifications, using materials that stand up to decades of use. You won’t deal with questionable tolerances or substitutions that may wear out early. These components are the same quality Mercury installs from the factory—proven, reliable, and designed to work flawlessly together. It’s the kind of choice that saves time, money, and frustration while extending the life of your engine.

FAQ

Q1: Which engines or systems does the 8M0147054 kit fit?

It’s made specifically for MerCruiser Alpha One sterndrives built between 1984 and 1990.

Q2: What sets this kit apart from aftermarket versions?

OEM Mercury parts are built to exact tolerances and use marine-grade materials that hold up longer in real boating environments.

Q3: How do I confirm this is the right kit for my drive?

Check your sterndrive’s model and production year—if it’s an Alpha One from 1984–1990, this is the correct maintenance kit.

Q4: Can this be used in saltwater?

Yes. The aluminum anodes included provide strong corrosion protection when matched to your boating environment.

Q5: Is installation easy for most boat owners?

Most mechanically inclined boaters can handle the service with common tools. Everything is sized for a clean, proper fit.