# 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

## Details

- **Price:** 15.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Electronic Components | ECU CDI & Electrical Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 15.00 AUD | In stock |

## Images

- 580740 OMC Coil | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/580740-omc-coil-genuine-used-part)
> Updated: 2026-06-29