A reliable ignition system is the backbone of a strong-running outboard, and the Yamaha Ignition Coil Assembly (6R3-85570-01-00) ensures every start is smooth and every throttle response is crisp. Designed to generate and deliver the high-voltage spark necessary for combustion, this coil plays a crucial role in engine performance. Over time, a weak or failing ignition coil can cause misfires, sluggish acceleration, and even difficulty starting. Replacing it with a genuine Yamaha part restores consistent ignition, keeping your engine running at peak efficiency.. Designed for Performance & Durability:. OEM Precision Fit - Engineered specifically for Yamaha outboards, ensuring seamless installation and optimal function.. Consistent Spark Energy - Provides reliable ignition for smooth idling, strong acceleration, and improved fuel efficiency.. Built for Marine Conditions - Resistant to heat, moisture, and vibration, delivering durability in harsh environments.. A failing ignition coil can