584477 582995 802371A1 18-5181 Ignition Coil for Johnson Evinrude | JLM Marine

Ignition Coil – Fits Johnson/Evinrude Outboard 1.5–40 HP (1949–1990)

This aftermarket ignition coil is engineered to deliver reliable spark performance for a wide range of Johnson and Evinrude outboard engines from 1.5 HP to 40 HP, spanning model years 1949 through 1990. It provides a direct replacement solution for vintage and classic OMC outboards across multiple horsepower classes and decades of production.

This coil directly replaces OEM part numbers 584477, 582995, 802371A1, and aftermarket equivalent 18-5181, along with numerous other Johnson/Evinrude, Mercury Marine, CDI, GLM, Mallory, and Sierra part numbers, ensuring broad compatibility and easy cross-referencing.

• Designed for dependable ignition performance on classic Johnson/Evinrude 2-stroke outboards
• Direct fit for engines ranging from small 1.5 HP units to larger 40 HP models
• Replaces multiple OEM and aftermarket part numbers for simplified sourcing

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson Serial Number Guide.

Technical Specifications

Package Contents

This package includes:

• 1 × Ignition Coil

Installation Guide

1. Disconnect the battery or remove the spark plug wire to prevent accidental engine start during service.
2. Locate the ignition coil mounted on the engine block or flywheel assembly. Reference your service manual if needed.
3. Disconnect the primary and secondary wire terminals from the old coil, noting their positions for correct reconnection.
4. Remove the mounting screws securing the coil to the engine and carefully lift the old coil away.
5. Clean the mounting surface to ensure proper grounding and secure installation of the new coil.
6. Position the new ignition coil in place, aligning mounting holes with the engine bracket or flywheel mount.
7. Install and tighten the mounting screws to the torque specified in your service manual; avoid over-tightening.
8. Reconnect the primary and secondary wires to the corresponding terminals on the new coil, ensuring snug connections.
9. Verify all electrical connections are secure and that no wires are pinched or chafing against moving parts.
10. Reconnect the battery or spark plug wire and perform a visual inspection of the installation.
11. Start the engine and test for proper ignition; the engine should fire smoothly without misfires or hesitation.
12. Check for any unusual vibrations or loose fittings and re-tighten as necessary before returning to normal operation.

Troubleshooting & FAQ

How do I confirm this ignition coil fits my engine?
Cross-reference your original OEM part number with the part number table above, or verify your engine model and year in the compatibility table. If your engine falls within the listed horsepower (1.5–40 HP) and year range (1949–1990) for Johnson/Evinrude, this coil should fit.

What are the signs that my ignition coil is failing?
Common symptoms include hard starting, misfires, rough idle, loss of power at high RPM, or no spark at the plug. Use a spark tester to confirm coil output before replacement.

Can I install this coil myself, or do I need a mechanic?
Installation is straightforward for users with basic mechanical skills and tools. However, proper electrical connections and grounding are critical; if you're unsure, consult a qualified marine technician.

How often should I replace the ignition coil?
Ignition coils typically last many years under normal use. Replace the coil when you experience ignition-related symptoms or during a comprehensive tune-up if the coil tests outside specification.

What is the difference between OEM and aftermarket ignition coils?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.