580740 OMC Coil | Genuine Used Part

🔧 Product Description

Genuine OMC / Johnson / Evinrude Ignition Coil and Yoke Assembly - Part Number: 0580740

A genuine OMC ignition coil and yoke assembly used on Johnson and Evinrude 3-cylinder and 4-cylinder ignition systems. This coil family is associated with 0580740 / 580740 and 0582382 / 582382 applications, including early V4 StarFlite and 100HP, 115HP and 125HP two-stroke ignition layouts.

⚙️ Key Features

• Genuine OMC / Johnson / Evinrude ignition coil

• Correct OEM reference 0580740 / 580740

• Coil and yoke assembly

• Used on 3-cylinder and 4-cylinder ignition systems

• Must be matched by coil mounting style and ignition lead layout

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 0580740 / 580740 to 0582382 / 582382 family

OEM / Related Numbers:

• 0580740

• 580740

• 0582382

• 582382

• 0502886

• 580847

• 802365

• Ignition coil and yoke assembly

Aftermarket / Verified Equivalents:

• CDI Electronics 183-2382

• Sierra 18-5193

• Mallory 9-23108

🚤 Compatibility

Commonly used on:

• Johnson / Evinrude 3-cylinder and 4-cylinder two-stroke ignition systems

• Early V4 StarFlite ignition coil applications

Typically suits:

• Johnson / Evinrude 100HP V4, including 1971 100HP applications

• Johnson / Evinrude 115HP V4 StarFlite applications

• Johnson / Evinrude 125HP V4 StarFlite applications

• 3-cylinder and 4-cylinder engines using the 0580740 / 0582382 coil family

• HP Range: 100HP / 115HP / 125HP confirmed family applications

• Engine Type: Johnson / Evinrude two-stroke ignition system

• Year Range: Early 1970s and model-diagram controlled replacement family

• Serial Note: Confirm by exact model number, coil/yoke mounting style and ignition diagram.

🔌 Function

The ignition coil transforms power-pack or ignition output into high-voltage spark for the assigned cylinder circuit.

Common signs of failure:

• Weak or missing spark

• Misfire under throttle

• Hard starting when cold or hot

• Cylinder drops out after warming up

• Cracked coil body or damaged yoke

• Carbon tracking at the coil tower

• Spark changes when the lead or coil is moved

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated