Features: 1.OEM numbers for reference: 4KB?81960?02, 4KB?81960?01, fit for Yamaha YFB YFM. 2.Excellent replacement for the old or damaged rectifier, easy to install and use. 3.Improve the accuracy of vehicle ignition, stabilize voltage, reduce clutter interference. 4.Reduce the phenomenons of idling jitter, and improve the problems such as weak acceleration and downshifting. 5.Prolong the battery life, improve the instantaneous discharge capacity of power system. Specification: Item Type: Rectifier Material: Aluminum Alloy + ABS OEM: 4KB-81960-02 4KB-81960-01 Fitment: Fit for Yamaha YFB Timberwolf 250 1998 2000 4KB-81960-02 Fit for Yamaha YFB250 1997 4KB-81960-01 Fit for Yamaha YFB Timberwolf 250 1997 4KB-81960-01 Fit for Yamaha YFM Wolverine 350 1996 1997 4KB-81960-01 Fit for Yamaha YFM350 1997 4KB-81960-01 Fit for Yamaha YFM Grizzly 600 1998 4KB-81960-02 Fit for Yamaha YFM Kodiak 400 1998 1999 4KB-81960-02 Fit for Yamaha YFM Big Bear 350 1998 1999 4KB-81960-02 Fit for Yamaha YFM Big Bear 400 2000 2001 4KB-81960-02 Fit for Yamaha YFM Wolverine 350 1998 2001 4KB-81960-02 Fit for Yamaha YFM Bear Tracker 250 1999 2000 4KB-81960-02 Fit for Yamaha YFM Warrior 350 1999 2001 4KB-81960-02 Fit for Yamaha YFM Warrior 350 1996 1997 4KB-81960-01 Fit for Yamaha YFM400 2001 4KB-81960-02 Fit for Yamaha YFM350 1995 4KB-81960-00 Fit for Yamaha YFM Big Bear 350 1996 1997 4KB-81960-01 Fit for Yamaha YFM Kodiak 400 1996 1997 4KB-81960-01 Wiring: Black Wire: Negative Pole of Power Supply Remaining Wires: Positive Pole of Power Supply PackageList: 1 x Rectifier Note: Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!