Black Box 582057 0582057

Function and Technical Context

The black box or ignition control module is the electronic component responsible for managing and distributing spark signals in the outboard engine ignition system. It operates within the electronic ignition circuit, processing signals from the stator and trigger to determine the precise spark timing for each cylinder. A failure in this module causes total or partial loss of ignition, resulting in hard starting, rough operation at different engine speeds, or sudden engine shutdown during navigation. Its correct operation is essential for maintaining combustion synchronization and optimal propeller performance. Compatible with part numbers 802140, 802362, 802362A1 (Mercury/Mariner/MerCruiser) and 0582057, 0767506, 582057 (OMC), which facilitates its use as a direct replacement in multiple applications.

When to Replace This Part?

The most common symptoms of a defective ignition module include intermittent spark failure, stumbling or cutouts under full load, engine that starts cold but stalls when reaching operating temperature, or ignition that does not respond at all. This type of electronic component does not follow a fixed replacement interval by hours, but it should be inspected at each seasonal maintenance and replaced upon any sign of erratic ignition, since its degradation is usually progressive. Replacing the black box preventively upon detecting the first signs prevents loss of propulsion at sea and costly emergency interventions.

Compatible Johnson/Evinrude Engines

Equivalent Manufacturer Part Numbers