Mercury – Alternator | Honda Outboard Charging System | Marine-Grade Build | 8M6007473

Overview

If you run a Honda outboard, you already know they’re quiet, steady, and built to go the distance. But none of that matters if your charging system can’t keep up with your time on the water. Whether you’re trolling at sunrise, pushing offshore toward clean blue water, or drifting with the wind while the electronics hum around you, you need an alternator that simply does its job without a hint of strain.

The Quicksilver 8M6007473 Alternator brings that kind of confidence. It’s the kind of part you install once and forget about—because every time you turn the key, the system comes alive exactly as it should. No flickering gauges, no weak charging cycles, no surprises.

Key Features

• 12-volt, 55-amp alternator designed for dependable charging performance
• Built for Honda 135–150hp outboards (2004–2014)
• Internal regulator and internal fan for compact, efficient cooling
• Plated fans, pulleys, and hardware for exceptional corrosion resistance
• Flame arrestor screens meeting Marine SAEJ1171 standards
• Ships with the required wiring harnesses for the intended application

Engine & Boat Compatibility

Engineered to fit:

• Honda 135hp outboards (2004–2014)
• Honda 150hp outboards (2004–2014)
• Perfect for owners of:
• Offshore center consoles
• Bay and flats boats
• Pontoon boats with higher electrical loads
• Dual-battery setups
• Trailers boats that live in salt or brackish water

Performance & Practical Benefits

A good alternator does more than keep the battery topped off—it keeps your day running smoothly. This Quicksilver unit delivers a tight, steady charge curve, even at lower RPM, which means electronics stay stable, pumps stay lively, and your ignition system never has to fight for power. The internal fan keeps temperatures controlled without adding bulk, and the marine-rated components shrug off the abuse that naturally comes with saltwater use.

You’ll feel the difference when the gauges stay solid, the starts are crisp, and the battery remains healthy season after season. It’s one of those upgrades you don’t think about until you’ve lived with a weak alternator—then it becomes something you’ll never compromise on again.

Why Buy OEM

There’s a huge difference between “fits” and “fits right.” This is the latter.

With a genuine Mercury Marine part, you get:

• Correct output for Honda 135–150hp charging systems
• Longer service life thanks to corrosion-resistant materials
• A design engineered to match factory performance
• Less downtime and fewer unexpected electrical issues
• Aftermarket charging components often miss the mark on durability and heat management. This alternator doesn’t. It was built for marine use from day one.

FAQ

Q1: Which engines does this alternator fit?

It’s made specifically for Honda 135 and 150hp outboards between 2004 and 2014.

Q2: How is this different from aftermarket versions?

Higher corrosion resistance, exact output matching, and better long-term dependability.

Q3: How do I confirm compatibility?

Check your engine’s model year and part number in your Honda owner’s or service manual.

Q4: Does it work in both saltwater and freshwater?

Absolutely. Its marine-grade materials are built for either environment.

Q5: Is installation straightforward?

Most owners with basic tools can manage it, but professional installation is always an option.