Fits Johnson Evinrude Ignition Coil 18-5172 581786 581370 502881 - 18,20,25,35HP

Ignition Coil for Johnson and Evinrude

This ignition coil replaces OEM part numbers 18-5172, 581786, 581370, and 502881 for Johnson and Evinrude outboard engines with 18, 20, 25, and 35 horsepower.

Overview

This ignition coil delivers reliable spark for Johnson and Evinrude outboards, restoring engine performance and starting. The coil is a direct replacement for multiple OEM cross-reference numbers. It is designed to fit engines in the 18-35 HP range.

Built For Performance

• Epoxy resin encapsulation protects against moisture and vibration
• High voltage output ensures strong spark for efficient combustion
• Precision wound copper windings for consistent performance
• Direct fit design with OEM-style connectors for easy installation
• Durable housing withstands marine conditions

Fits These Machines

• for Johnson and Evinrude 18HP outboards
• for Johnson and Evinrude 20HP outboards
• for Johnson and Evinrude 25HP outboards
• for Johnson and Evinrude 35HP outboards

On-The-Job Use

• Replace failing ignition coils on outboard motors to restore spark
• Used on fishing boats, runabouts, and utility craft
• Common maintenance part for seasonal engine tune-ups
• Ideal for DIY repairs and marine workshops

Specs At A Glance

Good To Know

Q: Is this ignition coil a direct replacement for the listed OEM numbers? A: Yes, it is designed to directly replace part numbers 18-5172, 581786, 581370, and 502881 without modification.

Q: Do I need to replace any other parts when installing this coil? A: It is recommended to inspect spark plugs and wires at the same time, but the coil can be replaced independently.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.