Mercury – Alternator Belt | OptiMax 1.5L Series | Reinforced Marine Rubber | 8M0026410

Overview

If you have spent enough mornings easing away from the dock or pushing through a long run across open water, you know how much trust you put in the small pieces of your engine. An alternator belt isn’t something you think about every day, but when it’s doing its job, everything just feels smooth — the battery charges, the electronics stay bright, and the engine hums in that steady, familiar rhythm. That’s why having the right belt matters. The Mercury Marine part 8M0026410 gives you that quiet peace of mind, the kind that lets you focus on the horizon instead of worrying about what’s happening under the cowl.

Key Features

• Replacement alternator belt engineered for Mercury OptiMax 1.5-liter 75–115 horsepower outboards.
• Reinforced marine-grade rubber designed for long-term reliability.
• Matches the original belt installed by Mercury Marine.
• Built to maintain proper operation of belt-driven engine systems.
• Meets all Mercury Marine original equipment specifications.
• Designed for consistent tension and stable performance.

Engine & Boat Compatibility

• Fits Mercury OptiMax 1.5L outboards from 75 to 115 horsepower.
• Designed for models with serial numbers 1B227000 and above.
• Ideal for freshwater and saltwater fishing boats, bay boats, pontoons, runabouts, and center consoles equipped with OptiMax power.
• Suitable for Mercury and Mariner outboard systems that use this specific alternator belt.

Performance & Practical Benefits

A solid alternator belt doesn’t call attention to itself — it simply keeps everything working the way it should. When you install the 8M0026410, you’ll feel that familiar, confident tension as it seats against the pulleys. There’s a tight, secure feel that tells you it’s going to stay in place even when the engine is running hard in rough water.

On the water, that translates into smooth charging, steady electrical output, and consistent accessory operation. A worn belt slips, squeals, or loses grip at the worst times, but this Mercury Marine part holds firm. It’s crafted from reinforced rubber that resists glazing, cracking, and stretching. Even after long seasons in hot weather, heavy vibration, and constant use, it keeps delivering the same reliable performance.

Installation is straightforward with basic tools, making it an easy piece of preventative maintenance that pays off every single trip. Once it’s on, you’ll know your engine is getting the support it needs to run right.

Why Buy OEM

When it comes to belts, fit and tension matter more than most people realize. An aftermarket version might be close, but “close” isn’t good enough when you’re miles from shore. A genuine Mercury Marine part ensures the correct length, width, and strength — no guessing, no surprises.

OEM belts are tested against heat, vibration, and long-duration loads that marine engines face every day. They’re built to last longer, require fewer adjustments, and protect the rest of the components in the charging system. If you want reliability without hassle, sticking with an original Mercury Marine belt is the smartest move.

FAQ

Q1: Which engines does this alternator belt fit?

It fits Mercury OptiMax 1.5-liter outboards between 75 and 115 horsepower, serial number 1B227000 and above.

Q2: What makes this belt different from aftermarket versions?

The fit, rubber compound, and tension consistency match the exact standards Mercury uses in factory production.

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

Check your outboard’s serial number and model. If you have a 75–115hp 1.5L OptiMax in the listed range, this is the correct belt.

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

Absolutely. The reinforced rubber material is designed to handle heat, moisture, and marine-level vibration.

Q5: Is installation straightforward?

Yes. Most boaters can replace it with simple tools following basic belt-routing guidelines.