Cdi Electronics 118-99510 Johnson Evinrude Esa Interrupter Switch & Harness

The CDI Electronics 118-99510 is a replacement ESA (Electronic Spark Advance) interrupter switch and harness assembly designed specifically for Johnson and Evinrude outboard motors. This critical ignition component controls the electronic spark advance system, ensuring optimal engine timing and performance.

Key Features:

• Direct replacement for Johnson/Evinrude ESA interrupter switch and harness
• Controls electronic spark advance for proper ignition timing
• Complete assembly includes switch and wiring harness
• Manufactured to OEM specifications for reliable fit and function
• Essential component for maintaining smooth engine operation

This interrupter switch is a vital part of the ESA system, which automatically adjusts ignition timing based on engine speed and load conditions. Proper function of this component ensures optimal fuel efficiency, smooth acceleration, and reduced engine stress.