Mercury – Quicksilver Engine Starter | Gear Reduction Series | 12-Volt | 8M6007403

Overview

There’s a certain calm that settles in when you turn the key and your engine comes to life without hesitation. If you’ve spent enough time around the docks—or miles offshore where the water stretches quiet and wide—you know how valuable that peace of mind is. The Quicksilver 8M6007403 starter delivers that steady confidence every time. Built for select Volvo Penta engines, it gives you the kind of reliability that feels almost personal, like your boat is answering back with a sure, familiar start.

Key Features

• Designed for use on various Volvo Penta engines
• Permanent magnet gear-reduction design for stronger, more efficient starting
• Clockwise rotation with a 9-tooth gear
• High-temperature epoxy-coated armatures for corrosion resistance
• Rugged 90/10 copper bushings or needle bearings for long-term durability
• Meets Marine SAE J1171 ignition protection standards

Engine & Boat Compatibility

This Mercury Marine part is engineered to match the needs of:

• Select Volvo Penta gasoline and diesel engines
• Common sterndrive setups found in runabouts, cruisers, cabin boats, and fishing vessels
• Inboard systems used in workboats and coastal craft

If your engine relies on a Volvo Penta starter with matching specifications or part numbers, the 8M6007403 is built to drop in with OEM-level accuracy.

Performance & Practical Benefits

What you’ll notice first is how tight and smooth the engagement feels. The gear-reduction system delivers a strong burst of torque right from the turn of the key, helping your Volvo Penta engine spin up cleanly—even after long stretches between outings. This isn’t just about raw power; it’s about consistency. A starter that performs the same way on a cool morning, a hot summer afternoon, or after a weekend of heavy use is one that earns real trust.

The epoxy-sealed armatures and marine-grade bearings help fight off moisture, vibration, and the harsh conditions that boats naturally live in. You get a reliable, secure start with fewer worries about corrosion or premature wear. For boaters who take pride in keeping their vessel running right, this part feels like an upgrade you can immediately sense in the engine’s response.

Why Buy OEM

There’s no substitute for components built to match the original engineering of your engine. OEM starters like this one ensure the correct alignment, torque output, and electrical characteristics your Volvo Penta system was designed for. That means fewer surprises, fewer do-overs, and far better long-term value.

You’re not just buying a replacement—you’re choosing the option that protects your investment. With Quicksilver, you get the reliability seasoned boaters count on and the performance that keeps you on the water instead of in the shop.

FAQ

Q1: Which engines does this starter fit?

It fits select Volvo Penta engines that match the specifications and OEM part numbers listed for the 8M6007403.

Q2: How is this different from aftermarket versions?

Quicksilver maintains OEM-correct torque, fitment, and electrical performance using higher-grade components.

Q3: How do I confirm compatibility?

Check your owner’s manual or match your existing starter’s part numbers with those associated with the 8M6007403.

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

Yes—its corrosion-resistant design performs reliably in any marine environment.

Q5: Is installation simple?

Most mechanically inclined boat owners find the install straightforward with basic tools.