191-2227-AF, Onan Voltage Regulator Rectifier: Replaces C32462, 33-441 
Used on Onan Performer Engines, Some Ona n B series as well and can be used for many other 12 volt equipment. 
Used on Onan powered 3000/4000 Series Case Ingersoll Tractors And LATE MODEL 226, 446, 448 models. This rectifier is mounted on the engine from the factory, Can be mounted elsewhere as long as its a good ground.
This can also be used on older 200/400 series tractors with Onan and Kohler Engines, with some mounting and wire connector modifications.
 
High-quality aftermarket replacement is priced much more affordable than Onan OEM. 
 
NOTE mounting screw/case needs to be on metal or a ground wire attached. Used on some late model Onan B43/B8 engines as well.
 
The Center tab is 12 volts, other tabs are AC in from the charging Stator/Alternator.
 
Replace Onan numbers 191-2208: 191-2106: 191-1748: 191-1275: 191-1206: 191-0886: