Mercury – Quicksilver 8M6007460 Alternator, 12-Volt/70 Amp | Charging and Electrical | Corrosion-Resistant Marine Finish | 8M6007460

Overview

Out on the water, you notice pretty quickly which parts you can trust. An alternator either keeps your batteries happy and your gauges steady, or it slowly becomes the reason you head back early. The Quicksilver 8M6007460 alternator is the kind of Mercury Marine part you bolt on and stop thinking about. You turn the key, the engine fires, the lights stay bright, and you can focus on the channel markers, not the charge indicator. It is a quiet kind of confidence, but you feel it every time you push away from the dock.

Key Features

• Seventy amp, twelve volt alternator designed for dependable marine charging.
• Purpose built for various Pleasurecraft and Crusader marine engines using this style alternator.
• Internal regulator and internal fan for controlled, efficient charging and cooling.
• Plated fan, pulley, and hardware to resist corrosion in harsh marine environments.
• Flame arrestor screens that meet Marine SAE J1171 safety certification.
• New replacement unit engineered to meet or exceed original equipment manufacturer output and specifications.
• Wiring harnesses supplied as required by specific applications to simplify installation.

Engine and Boat Compatibility

• Designed for use on various Pleasurecraft marine engines calling for Mercury Marine part number 8M6007460.
• Fits selected Crusader marine engines using seven series style alternator applications.
• Common on inboard and sterndrive packages built around Delco based charging systems.
• Well suited for cruisers, sport fishing boats, ski boats, and multipurpose family boats that run multiple electronic loads.

Performance and Practical Benefits

On the water, this alternator is all about steady, predictable power. The internal regulator works in the background, feeding your batteries a smooth, even charge so electronics stay bright and engines crank with confidence. You will notice how calm the dash looks when everything is getting the power it expects: gauges sweep cleanly, screens do not flicker, and pumps and blowers sound strong instead of tired.

The internal fan and corrosion resistant hardware help the alternator stay cool and secure in the hot, salty air of an engine room. Instead of flaky charging and mystery voltage drops, you get a tight, solid feel every time you check the meter. Match the correct part number, bolt it up, tension the belt, and it simply becomes part of the background rhythm of the boat, humming along while you watch the wake instead of the volt gauge.

Why Buy OEM

If you spend any real time on the water, you know electrical shortcuts have a way of showing up at the worst possible moment. Choosing a genuine Mercury Marine part means the alternator was built to the same standards as the original equipment on your engine. Mounting points line up, wiring connections make sense, and the output is what your batteries and control systems were designed around.

Over time, that accuracy saves money and frustration. A cheaper aftermarket unit might fit “close enough,” but small differences in output, coatings, or internal components can lead to odd charging behavior and extra troubleshooting. With an original equipment manufacturer alternator, you are stacking the deck in your favor: easier diagnosis with factory manuals, longer service life, and a much better chance that everything works right the first time you turn the key.

FAQ

Q1: Which Mercury engines or systems does the Quicksilver 8M6007460 alternator fit?

It is used on various Pleasurecraft and Crusader marine engines that specify Mercury Marine part number 8M6007460 or a directly crossing alternator. The safest approach is to confirm with your engine serial number and parts manual.

Q2: What makes this part different from aftermarket alternatives?

This alternator is built as a true Mercury Marine part, with marine rated flame arrestor screens, plated hardware, and output matched to the original charging system. Many aftermarket options copy the shape but do not always match the durability, coatings, or regulator quality needed for long term marine use.

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

Check the part number on your current alternator or in your engine’s parts catalog. If it lists part number 8M6007460 or a direct cross to it, and the mounting style and plug connections match, you are on the right track. When in doubt, verify with your service manual or dealer.

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

Yes. Its corrosion resistant finish and marine design make it suitable for freshwater lakes and demanding saltwater environments, as long as you follow normal cleaning, inspection, and belt maintenance.

Q5: Is installation straightforward for most boat owners?

If you are comfortable working around engines and follow the service manual, installation is generally straightforward: disconnect battery power, remove the old alternator, transfer brackets if needed, connect wiring, and set proper belt tension. If any of that feels uncertain, a marine technician can handle it quickly and safely.