Outboard Engine Ignition Coil fit for Yamaha 40hp 40X E40X MHL 66T-85570-00 EY

Outboard Engine Ignition Coil for Yamaha

This outboard engine ignition coil converts low voltage into high voltage for spark plugs on engines for Yamaha, replacing OEM number 66T-85570-00.

Overview

This outboard engine ignition coil provides a strong, consistent spark to improve engine starting and combustion efficiency. Designed for marine environments, this outboard engine ignition coil is built to withstand high moisture and salt exposure. Marine mechanics can rely on this outboard engine ignition coil to resolve misfires and electrical issues in the ignition system.

Built For Performance

• High-dielectric epoxy potting protects internal components from moisture
• Heavy-duty copper windings for efficient voltage step-up
• Corrosion-resistant boot and terminals ensure a reliable electrical connection
• Designed to withstand high thermal stress and engine vibration

Fits These Machines

• for Yamaha 40hp
• for Yamaha 40X
• for Yamaha E40X
• for Yamaha MHL

On-The-Job Use

• Replacing weak or failed ignition coils to fix engine misfires
• Restoring dependable starting on commercial and recreational boats
• Troubleshooting weak spark issues during routine marine tune-ups

Specs At A Glance

Good To Know

Q: What are the signs of a failing outboard ignition coil? A: Common symptoms include engine stalling, rough idling, hard starting, and a noticeable drop in power.

Q: Is it recommended to replace ignition coils in pairs? A: While not mandatory, replacing all coils at once ensures consistent ignition performance across all engine cylinders.

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