Sierra 18-5790-1 CDI Switch Box for 3-Cylinder Outboard Engines

The Sierra 18-5790-1 is a high-quality CDI (Capacitor Discharge Ignition) switch box designed for 3-cylinder outboard marine engines. This electronic ignition module delivers reliable spark control and timing for consistent engine performance on the water.

Key Features:

• Direct replacement CDI switch box for 3-cylinder outboard motors
• Replaces Mercury/Mariner OEM part number 18495A26
• Precision-engineered to meet or exceed OEM specifications
• Solid-state electronics for dependable ignition control
• Weather-resistant construction for marine environments
• Sierra quality backed by extensive marine parts expertise

Sierra Marine is known for manufacturing reliable replacement parts for outboard engines. This CDI switch box provides the critical ignition timing and spark control needed to keep your 3-cylinder outboard running smoothly and efficiently.