Description
The Sierra 18-5772 Power Pack is a marine ignition module designed for V4 outboard engines from Johnson/Evinrude/OMC that originally used part number 584041 (and equivalents 583489/0584041). It is built to the manufacturer’s specification with marine-grade components, and is intended to deliver reliable ignition performance in harsh marine environments for 120-140 hp outboards (4-cyl) in the 1990s era. The unit comes ready to install in place of the OEM power pack, without rewiring concerns when used in compatible applications.