Sierra 118-99453 Johnson Evinrude 6 Cylinder Timer Base

The Sierra 118-99453 Timer Base is a premium replacement ignition component designed for 6-cylinder Johnson and Evinrude outboard engines. This critical component works in conjunction with the power pack to control ignition timing and ensure precise spark delivery to all six cylinders.

Key Features:

• Precision-engineered for 6-cylinder Johnson/Evinrude outboards
• Premium quality construction for extended service life
• Meets or exceeds OEM specifications
• Features integrated trigger mechanism for accurate timing control
• Includes white glide ring for smooth operation
• Direct replacement for original equipment timer base

The timer base mounts inside the bearing carrier beneath the flywheel and connects to the power pack via a multi-pin connector. Professional installation is recommended as this component requires flywheel removal and precise alignment. Sierra parts are backed by their limited lifetime warranty and manufactured to rigorous quality standards.