Sierra 18-99315 Yamaha 3-Cylinder Ignition Pack CDI Module

The Sierra 18-99315 is a replacement ignition pack designed for 3-cylinder Yamaha outboard engines. This CDI (Capacitor Discharge Ignition) module serves as the brain of your engine's ignition system, controlling spark timing and delivery to ensure reliable starting and optimal performance.

Key Features:

• Direct replacement for Yamaha OEM ignition packs on 3-cylinder outboard models
• CDI technology provides consistent spark energy across all RPM ranges
• Manufactured to meet or exceed OEM specifications for reliable performance
• Helps restore proper ignition timing and engine performance
• Sierra quality construction for marine environment durability

This ignition pack is an essential component of your outboard's ignition system. If you're experiencing hard starting, rough running, or loss of power on one or more cylinders, a faulty ignition pack may be the culprit. Sierra's aftermarket replacement provides a cost-effective solution without sacrificing quality or reliability.