Mercury – Quicksilver Engine Starter | Diesel Starting Series | Durable Marine Construction | 8M6007440

Overview

Starting a diesel engine is one of those moments that never loses its significance. You press the button, hear the starter engage, and wait for that familiar rumble that says everything is working exactly as it should. When the system responds instantly, it sets the tone for the entire day — whether you’re casting off before sunrise or getting ready for a long stretch offshore. The Mercury Marine part number 8M6007440 Quicksilver Engine Starter brings that dependable feeling to every trip. Built for Yanmar diesel engines, it delivers the kind of confidence only a well-engineered, marine-ready starter can provide.

Key Features

• Twelve-volt starter designed for select Yanmar diesel engines
• Offset gear reduction design for powerful, efficient cranking
• Clockwise rotation with a fifteen-tooth gear for proper engagement
• Permanent magnet construction for higher torque and long-term reliability
• High-temperature epoxy armature protects wiring from moisture and corrosion
• Constructed with ninety–ten copper bushings or heavy-duty needle bearings
• Meets Marine SAE J1171 ignition protection standards
• Part Number: 8M6007440

Engine & Boat Compatibility

• For various Yanmar diesel engines used in sailboats, trawlers, commercial vessels, and auxiliary generator systems
• Reliable in displacement cruisers, workboats, and compact marine diesel applications
• Suitable for harsh saltwater environments, freshwater conditions, and high-vibration engine compartments
• Works equally well in industrial setups using Yanmar diesel platforms

Performance & Practical Benefits

What makes this starter stand out is how confidently it performs in the moments that matter. Diesel engines require torque — real, immediate torque — and this unit delivers it with a smooth, strong, steady engagement. Every time you turn the key, the cranking feels sure and deliberate, whether the engine is cold, the battery is under load, or the weather has turned unfriendly.

The offset gear reduction adds efficiency to the starting cycle, helping the engine fire with less strain on internal components. The epoxy-sealed armature protects critical wiring from humidity and heat, two challenges Yanmar engines face regularly in tight, enclosed spaces. The bushings or needle bearings create a clean rotation that reduces friction, extending the life of the starter and maintaining performance season after season.

For boaters who depend on diesel reliability — long passages, commercial duty, liveaboard cruising, or weekend excursions — this starter becomes a quiet cornerstone of the entire setup. It doesn’t ask for attention. It simply works, allowing you to focus on the water instead of the engine compartment.

Why Buy OEM

A genuine Mercury Marine part is built to the same standards your engine was designed around. That means proper fitment, torque output, internal durability, and long-term consistency. Aftermarket starters can look similar, but they often use lower-grade magnets, unprotected wiring, or cheaper bearings that fail when exposed to marine conditions. With OEM, you’re investing in peace of mind and avoiding the cost and downtime of premature failures. It’s the kind of practical decision seasoned boaters understand instinctively.

FAQ

Q1: Which engines does the Quicksilver Engine Starter fit?

It fits various Yanmar diesel engines used in marine and industrial applications.

Q2: What makes this starter better than aftermarket options?

It offers OEM-grade torque, corrosion-resistant components, and a rugged gear-reduction design built for diesel demands.

Q3: How do I know if it’s the right replacement?

Match your engine model to part number 8M6007440 or refer to your owner’s manual.

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

Yes, it’s engineered for harsh marine conditions of all kinds.

Q5: Is installation straightforward?

Most technicians and experienced boat owners can install it with common tools.