Voltage Regulator For Yamaha 250 Timberwolf Bear Tracker 1997-2000 YFM 350 Wolverine Warrior Big Bear 1995-2001 YFM 400 Kodiak 1996-2001 YFM 600 Grizzly 1998 OEM Repl# 4KB-81960-02-00 4KB-81960-00-00 Brand new voltage regulator rectifier direct replacement Improved heat sink and charging capabilities Higher grade of electric components All products shipped are tested One year limited warranty