Sierra 18-99406 Timer Base for Johnson/Evinrude 3-Cylinder Outboards

The Sierra 18-99406 Timer Base is a premium replacement ignition component designed for Johnson/Evinrude 3-cylinder outboard motors. This timer base fits 1979-2001 models rated at 60, 65, 70, and 75 horsepower without Quick Start, providing critical timing signals to the ignition system for reliable engine performance.

Key Features:

• Premium quality construction for longer service life and meets or exceeds OEM manufacturer specifications
• Replaces OEM part numbers 581949, 582724, 583060, 583131, 583378, 584269, and 584562
• Direct replacement for CDI part number 133-3378
• Includes white glide ring for proper installation
• Backed by Sierra's limited lifetime warranty

This timer base is a critical component of the engine's ignition system, working in conjunction with the stator and power pack to deliver precise spark timing. Sierra marine parts are engineered to deliver dependable performance in demanding saltwater and freshwater environments, making this an excellent choice for rebuilding or repairing your Johnson/Evinrude outboard's ignition system.