NEWHOW Ignition Coil 4-Pack for Johnson Evinrude Outboards — Direct-Fit OEM 582508 Replacement, Restores Spark & Starting

NEWHOW 4-pack ignition coils 18-5179 are direct-fit replacement coils engineered to restore consistent spark and reliable ignition performance on Johnson and Evinrude 1985-and-later outboard engines.

If your outboard is showing signs of weak spark, hard starts, misfires, or rough idle, worn ignition coils are a common cause. These NEWHOW coils are built to match the electrical and mechanical fit of the OEM 582508 family, providing a straightforward plug-and-play swap for many 2-stroke Johnson and Evinrude models spanning small tiller engines up to high-horsepower units.

Which engines will these coils work with?

These coils are intended for Johnson and Evinrude outboards from 1985 onward and cover a broad horsepower range. They are compatible with many 4–300 HP models, but are not universal — always confirm against your engine’s OEM part number or service manual before ordering.

• Direct replacement for OEM numbers such as 582508, 0582508, 512227, 183-2508, 72010.
• Commonly used across popular models from 4 HP up through 300 HP (examples include 40, 60, 90, 115, 150, 200, 225 HP).
• Designed for 2-stroke Johnson/Evinrude engines produced 1985 and later.
• Not compatible with some 60-degree loop-charged (double-coil) configurations.

How will swapping to these coils affect engine performance?

Replacing failed coils typically restores proper spark timing and intensity, which improves starting reliability, throttle response, and idle stability. The NEWHOW units are engineered to reduce common ignition symptoms when installed correctly.

• Helps eliminate misfires and uneven idling when the coil is the root cause.
• Can recover lost power and smoother acceleration linked to weak spark.
• May reduce spark plug fouling caused by intermittent ignition.
• Immediate performance change when swapped for a defective coil.

Is installation difficult and how many coils will I need?

Installation is straightforward for DIYers familiar with outboard maintenance: the coils use standard plug-in connectors and bolt into the existing mounting points. Count your cylinders and match coil quantity to your engine — most multi-cylinder engines require one coil per cylinder.

• Plug-in electrical connector and standard mounting holes for direct swap.
• One coil per cylinder: e.g., 2-cylinder needs 2 coils, V6 needs 6 coils.
• Check your engine model and OEM number (582508) to confirm fitment.
• Professional installation recommended if you’re unsure about ignition diagnostics.

What limitations or fitment cautions should I know?

While these coils cover many Johnson and Evinrude models, there are exceptions. Certain loop-charged, 60-degree engines that use paired double coils require different parts; using the wrong coil can cause poor performance or electrical damage.

• Not compatible with 60-degree loop-charged double-coil designs (some 150–175 HP models).
• Intended for 2-stroke engines only — verify engine type before purchasing.
• Cross-reference with the OEM part number list provided to avoid misorders.
• Replace damaged wiring or connectors to ensure reliable operation.

Who is this for: Boaters, mechanics, and fleet operators who maintain Johnson or Evinrude 2-stroke outboards (1985 and later) and need a cost-effective, direct-replacement ignition coil solution. Choose a 4-pack if you’re servicing multiple cylinders or planning preventive maintenance; confirm engine compatibility and coil count before purchase to ensure a smooth swap.