Mercury – Ignition Coil for V6 & V8 MerCruiser Engines | Thunderbolt IV/V Series | Standard Finish | 8M0079202

Overview

Anyone who’s spent time behind the helm knows how reassuring it is when your engine lights up instantly — that crisp, confident spark that tells you the day is starting right. When your ignition system is healthy, you feel it in the smooth idle, the steady power, and the lack of hesitation when you throttle up. The Quicksilver Ignition Coil 8M0079202 delivers that kind of trust. Designed for MerCruiser V6 and V8 sterndrive and inboard engines equipped with Thunderbolt IV and V ignition systems, it keeps your spark strong and your engine running the way it should, whether you’re cruising a quiet cove or pushing across open water.

Key Features

• Replacement ignition coil for select MerCruiser V6 and V8 sterndrive and inboard engines

• Built to Mercury Marine’s original equipment specifications for accurate, consistent ignition performance

• Durable housing designed to resist moisture, vibration, and heat

• Reliable internal windings ensure steady spark delivery under varying loads

• Mercury Marine part number 8M0079202

Engine & Boat Compatibility

• Fits MerCruiser V6 and V8 engines using the Thunderbolt IV and Thunderbolt V ignition systems

• Common in a wide range of recreational boats, including bowriders, deck boats, runabouts, pontoons, cruisers, and ski boats

• Suitable for both sterndrive and inboard configurations

• Works across many General Motors–based MerCruiser powerplants

Performance & Practical Benefits

A good ignition coil doesn’t draw attention to itself — it just works. When you turn the key, the spark is immediate and strong. When you settle into idle, the engine feels smooth and steady, without the hiccups or sputters that point to weak ignition. And when you push the throttle forward, the response feels tight and confident, with no hesitation or stumble.

This Quicksilver coil is built to handle the real-world demands of marine life. Moisture, constant vibration, long periods of heat soak — these conditions wear down lesser coils quickly. Mercury engineers their ignition components to resist internal breakdown and deliver consistent spark energy, even after years of demanding use. The result is cleaner combustion, more reliable starts, improved fuel efficiency, and a noticeable reduction in misfires or rough-running behavior. Installation is straightforward, and once installed, the coil becomes one of those parts you rarely think about — because it simply does its job day after day.

Why Buy OEM

Buying a genuine Mercury Marine part isn’t just about matching a part number — it’s about knowing the component was engineered for your exact ignition system. Aftermarket coils often miss the mark with lower-quality windings, inconsistent output, or housings that can’t handle marine conditions. An OEM ignition coil ensures proper spark strength, correct timing behavior with the Thunderbolt system, and long-term durability. It’s the smarter, more reliable choice for boaters who’d rather avoid breakdowns and keep their weekends on the water running smoothly.

FAQ

Q1: Which engines does the Quicksilver Ignition Coil 8M0079202 fit?
It fits MerCruiser V6 and V8 sterndrive and inboard engines equipped with Thunderbolt IV or V ignition systems.

Q2: What makes this coil different from aftermarket alternatives?
It meets Mercury’s original equipment standards, offering stronger durability, more consistent spark output, and better marine resistance.

Q3: How do I know if this is the correct replacement?
Check your engine’s ignition system type. If you have Thunderbolt IV or V, this coil matches that specification.

Q4: Can it be used in both saltwater and freshwater environments?
Yes. The coil housing is designed to resist corrosion and moisture intrusion in either setting.

Q5: Is installation straightforward for most boat owners?
Yes. If you’re comfortable replacing basic ignition components, this coil installs easily with standard tools.