OEM 4-Wire Rectifier 581778 – Reliable Charging System Performance for OMC/Johnson/Evinrude Outboards
Keep your charging system operating properly with the 4-Wire Rectifier, a critical component designed to convert AC current produced by the stator into usable DC power for battery charging and electrical system operation.
Without a properly functioning rectifier, your battery may not charge correctly. Leading to weak starting performance, low voltage issues, and electrical system problems. The OEM rectifier helps ensure your battery receives a steady charge while your outboard is running, keeping essential electronics and accessories powered.
Built for marine environments. Designed to withstand vibration, moisture, and the demanding conditions found on the water. Whether you’re maintaining a recreational outboard or a high-performance setup, a dependable charging system is essential for reliable operation.
At Liquid Revolutions, we know that electrical reliability is just as important as engine performance. A properly functioning rectifier helps ensure your battery stays charged and your outboard is ready when you need it.
Common Symptoms of a Failing Rectifier
- Battery not charging properly
- Weak or dead battery after operation
- Low voltage readings
- Electrical accessories operating inconsistently
- Difficulty starting the engine
- Overcharging or undercharging conditions
Key Features & Benefits
- Converts AC to DC Power – Transforms stator output into battery-charging current
- Maintains Battery Charge – Helps keep your starting battery charged and ready
- Supports Electrical System Reliability – Provides consistent charging system performance
- 4-Wire Configuration – Designed for compatible OMC, Johnson and Evinrude outboard applications
- Durable Marine Construction – Built to handle vibration, heat, and moisture
- OEM Direct Replacement – Ideal for repairs, maintenance, and restorations
Whether you’re replacing a failed component or performing preventative maintenance, the 4-Wire Rectifier helps restore proper charging system function and dependable electrical performance for your OMC, Johnson or Evinrude outboard.
Replaces: 0581366, 0582304, 0777675




