Sierra 118-99317 Yamaha 2-Cylinder Outboard Ignition Pack CDI Module

The Sierra 118-99317 is an aftermarket replacement ignition pack (CDI module) designed for Yamaha 2-cylinder outboard engines. Sierra International is a leading manufacturer of marine replacement parts, and this ignition pack is engineered to meet or exceed OEM performance standards for reliable spark delivery and engine operation on the water.

The ignition pack—also known as a CDI (Capacitor Discharge Ignition) unit or power pack—is a critical component in the outboard's ignition system. It stores and releases electrical energy to fire the spark plugs at precisely the right moment, ensuring proper combustion and smooth engine performance. A faulty ignition pack can cause hard starting, misfires, rough running, or complete engine failure.

Key Features:

• Direct OEM replacement for Yamaha 2-cylinder outboard ignition packs
• Manufactured by Sierra International to meet or exceed original equipment specifications
• Restores reliable ignition system performance
• Plug-and-play installation using existing wiring harness connectors
• Designed for durability in harsh marine environments
• Quality-tested for consistent spark output and timing accuracy

Sierra's 118-series ignition components are trusted by marine technicians and boat owners for their dependable fit and performance. This ignition pack is a cost-effective solution to restore your Yamaha outboard's ignition system without the expense of OEM pricing.