Regulator For John Deere Kohler Engine 8 to 25 HP / 15 AMP Magnum Command Pro Series KT17 KT19 OEM Repl.# AM1025964140305 4140309 2575503S 2575503 4140309-S 4140305 4140301 2575503-S 4140310-S Brand new aftermarket voltage regulator rectifier. Direct replacement to your original unit. Plug-and-play, direct fit, easy installation. Higher grade of electric components. The quality exceeds the OEM equipment. All products shipped are tested One year limited warranty