Features: 1.Fitment: Voltage regulator rectifier is fit for KFX R 450 de 2008?2013, fit for KFX 400 de 2003?2006, fit for KFX 400 de 2003 ?2006, fit for KX F 450 de 2009 ?2011. 2.OE Number: Regulator rectifier replace part number are 21066 0042, 21066 S004, 32800 05F20. Please double check the OE part number of your item before ordering. 3.Function: Improve engine power and provide stable voltage, directly improve the performance of low speed torsion of vehicles, increase speed and climb more effectively. 4.Waterproof Performance: The voltage rectifier is made of precise aluminium alloy material and waterproof design, which can adapt to various environments. 5.Low Consumption: Voltage rectifier can improve ignition efficiency, making fuel combustion more adequate, and reduce the use of vehicle fuel consumption. Specification: Item Type: Voltage Regulator Rectifier Material: Aluminium alloy Voltage: 12V OE: 21066 0042, 21066 S004, 32800 05F20 Application: The aftermarket replacement parts for retrofitting old voltage regulators that meet or will exceed OEM standards, direct replacement, easy installation Rectifier Function: The rectifier uses the semiconductor diode to conduct current, so as to rectify and control the power supply, provide stable voltage for the battery, and improve the ignition efficiency of the engine. Applicable Model: Fit for KFX R 450 de 2008-2013 Fit for KFX 400 de 2003-2006 Fit for KFX 400 de 2003 -2006 Fit for KX F 450 de 2009 -2011 Fit for KX F 250 de 2011- 2012 Replacement for Suzuki LT-F 250 2014 Replacement for Suzuki LT-F Ozark 250 de 2002 - 2009 Replacement for Suzuki LT-F Ozark 250 de 2007 - 2009 Replacement for Suzuki LT-F Ozark 250 2012 Replacement for Suzuki LT-Z Quad Sport 250 de 2004 -2009 Replacement for Suzuki LT-Z Quad Sport 400 de 2003 -2008 Replacement for Suzuki LT-Z Quad Sport 250 de 2004 - 2008 Replacement for Suzuki RV 200 de 2016 - 2017 Note: 1.Please double check the part number of your item, matching information is for reference only. 2.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!