Sierra 118-5772-2 Power Pack for Johnson/Evinrude Outboard Motors

The Sierra 118-5772-2 Power Pack is a premium aftermarket replacement ignition component designed for Johnson/Evinrude outboard motors. This critical component controls ignition timing and delivers high-voltage electrical current to the ignition coils, ensuring reliable engine performance and proper spark plug firing.

Key Features:

• Direct replacement for OEM part numbers: Johnson/Evinrude 584041, 583489, and 584040
• Interchangeable with CDI 113-4041 and Mallory 9-25017
• Capacitor discharge ignition (CDI) technology for reliable high-RPM performance
• Engineered to meet or exceed original equipment specifications
• Sealed, maintenance-free design for harsh marine environments

As a vital component of the CDI ignition system, the power pack stores electrical energy and releases it in precisely timed bursts to the ignition coils. This ensures optimal spark timing across all cylinders for smooth engine operation. Sierra products are manufactured to withstand the demanding conditions of marine use, providing reliable performance and long service life.