The ROP Shop replacement Rectifier, Square 3-Post for Mercury 175 HP 0C239553-0D081999 Outboard Engine. Specs - Type: Square, 3 Post. Refer to images 2 & 3 for more information. Includes - (1) Rectifier; comes as shown in the first image. Converts the AC power from the engine stator to DC power to charge the battery. Fits/For: Various Mercury & Mariner 2-cycle outboards from 6 HP through 220 HP.
