Rectfier Regulator John Deere 318-420 Lawn Tractors Onan P-Series 16HP 17HP 18HP 19HP 20HP Engines 20 Amp Rating 191-1748 191-2106 191-2208 New Aftermarket Part (Not Rebuilt/Refurbished/Repurposed) 3 Male Terminals AC-B+-AC Please verify this is the right part number before ordering