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If your Johnson or Evinrude outboard isn't charging the battery, the voltage regulator/rectifier is a likely suspect.

This CCIYU unit is a direct OE spec replacement for a wide range of 50 to 235 HP motors.

It's a 3-wire, 12V rectifier in a silver metal/plastic housing.
It measures about 60x30x30mm with 160mm wire leads and 40mm mounting hole spacing (8mm holes).

It replaces a ton of old numbers: 583408, 580795, 581603, 582307, 580841, and Sierra 18-5708, 18-5708Z.

Brand new, comes with a 1-year warranty.

Get your charging system working right and keep your battery topped up on the water.

4 out of 5