Mercury – Ignition Coil | TwoStroke 20hp Series | Marine-Grade Ignition Module | 8M0219430

Overview

Anyone who runs a small TwoStroke knows how much character these engines have — the punchy throttle response, the lightweight feel, the way they spring to life when everything’s firing just right. But when the ignition coil starts to weaken, that personality turns into hesitation, rough idle and hard starting. The Quicksilver Ignition Coil 8M0219430 restores that sharp spark your 20hp Mercury depends on. It’s built tough, seats cleanly and brings back the smooth, confident operation that makes these motors such dependable companions on the water.

Key Features

• OEM-validated ignition coil for Mercury TwoStroke outboards
• Includes coil, bracket and mounting screw
• Clean, consistent spark delivery across all RPMs
• Marine-grade construction resists heat and moisture
• Exact fitment for plug-and-play installation

Engine & Boat Compatibility

Fits Mercury:

• 20hp Carbureted TwoStroke outboards

Ideal for:

• Jon boats
• Tenders and dinghies
• Small utility skiffs
• Lightweight fishing boats

Performance & Practical Benefits

With a fresh ignition coil, the motor comes alive again. Starts feel easier. Idle steadies. Throttle response sharpens. It’s one of those upgrades that changes the entire personality of the engine without requiring a major repair.

This coil is engineered for marine heat cycles and constant vibration. It stays firmly mounted, resists moisture intrusion and maintains stable spark energy even when the engine has hours of runtime behind it. Whether you’re trolling slowly along a weed line or pushing upriver against current, the coil keeps the combustion cycle tight and reliable.

Installation is simple — the bracket lines up perfectly, the screw threads cleanly and the plug connections snap into place without fuss. In a few minutes, the engine goes from “acting tired” to “feeling eager,” and that reliability becomes something you depend on each time you push off from the dock.

Why Buy OEM

Ignition coils need precise windings, correct resistance and stable thermal performance. Aftermarket coils often look identical, but the internal construction can vary enough to cause misfires, weak spark or short service life.

With a genuine Mercury Marine part you get:

• Exact electrical specifications
• Stronger insulation
• Better heat resistance
• Reliable long-term performance
• Perfect fit with no modifications

It’s the right choice when you want your engine to run the way Mercury designed it to.

FAQ

Q1: Which engines does this coil fit?

It fits Mercury 20hp carbureted TwoStroke outboards.

Q2: Why choose this over aftermarket?

OEM coils deliver consistent spark, proper resistance and longer life.

Q3: How can I confirm fitment?

Check your engine horsepower and that it is a TwoStroke carbureted model.

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

Yes — it’s built for harsh marine conditions.

Q5: Is installation easy?

Very. Most owners can install it with a simple screwdriver.