Mercury – Quicksilver Alternator | Volvo-Penta Sterndrive & Inboard Series | Corrosion-Resistant Plated Finish | 8M6007508

Overview

There is a certain peace that settles in when your electrical system does exactly what it is supposed to do, every single time. Out on the water, that steady reliability means everything—your radios stay clear, your gauges stay alive, and your engine responds the moment you throttle up. I have always trusted Mercury Marine parts for that kind of confidence, the kind that keeps you focused on the horizon instead of worrying about what is going on under the engine cover. With the Mercury Marine part number 8M6007508, that trust becomes something you can feel every time your engine turns over strong and smooth.

Key Features

• Seventy-five amp, twelve-volt alternator for select Volvo-Penta sterndrive and inboard engines
• Corrosion-resistant plated fans, pulleys, and hardware for long-lasting marine durability
• Built with an internal regulator and internal fan for controlled, efficient output
• Equipped with flame arrestor screens meeting Marine SAE J1171 certification
• Designed to meet or exceed original equipment electrical output and performance
• Replaces major original equipment alternators including Volvo 3862613 and 3862665

Engine & Boat Compatibility

• Fits a range of Volvo-Penta sterndrive and inboard engines
• Common on cruisers, sport boats, family runabouts, cabin boats, and offshore fishing craft
• Ideal for vessels running accessories such as pumps, lighting systems, marine electronics, and navigation equipment
• Suitable for both recreational and light commercial marine applications that require dependable charging output

Performance & Practical Benefits

With this alternator powering your system, you feel the difference in the smoothness and steadiness of your electrical output. The charge cycle is strong, consistent, and predictable, keeping your batteries healthier and your onboard systems operating without flicker or hesitation. The fitment is secure and precise, making installation feel clean and straightforward. Once installed, the alternator delivers tight, efficient rotation that supports everything from ignition to electronics with the confidence only a true Mercury Marine part can provide.

The plated components help the alternator resist corrosion from salt spray and humidity, extending its life even in tough conditions. The internal fan keeps the alternator running cool, and the flame arrestor adds an essential layer of safety inside the engine bay. Long days on the water, constant vibration, or heavy electrical loads—this alternator is engineered to take it all and keep delivering power with steady reliability. Maintenance stays simple, and performance stays dependable season after season.

Why Buy OEM

If you have spent enough time on the water, you know that using genuine components matters. A Mercury Marine part like this one is designed to match your engine exactly, from electrical output to long-term durability. Aftermarket versions often fall short when it comes to corrosion resistance, precise voltage control, and overall stability. The value of part number 8M6007508 is not just in how it performs, but in how long it continues to perform—saving you time, replacements, and worry in the long run. It is the kind of part you choose because you want your boat to work right the first time, every time.

FAQ

Q1: Which engines does the Alternator part number 8M6007508 fit?

It fits a selection of Volvo-Penta sterndrive and inboard engines.

Q2: What sets this alternator apart from aftermarket options?

Its corrosion-resistant plated construction, internal regulation, and Marine SAE J1171 certification provide superior durability and reliability.

Q3: How can I confirm it is the correct replacement?

Match your engine model and specifications with the details in your owner or service manual.

Q4: Can this alternator handle saltwater and freshwater use?

Yes. Its plated components and marine-grade construction make it suitable for both environments.

Q5: Is installation straightforward for most boat owners?

Yes. Its OEM-specific design makes installation simple and securely aligned.