Features: 1.OE Number: The part number for reference are 5KM 85540 10 00, 5KM 85540 00 00, 5KM855401000, 5KM855400000. Please confirm whether it is consistent with the OE you need before placing an order. 2.Fitment: CDI box unit is perfect replacement for ATV YFM660 2002 to 2003, replacement for Grizzly 660cc, and replacement for YFM 660 R Raptor 2002 to 2003. 3.Durable: The CDI ignition box meets OEM specifications, and the durable housing and protective sleeve help shield and prevent harsh conditions, vibration, wear, and moisture, ensuring its long service life. 4.Easy Installation: The CDI ignition box installation program is simple and does not require special tools or professional installation personnel. It can be installed independently and can be completed in a short time. 5.Increase Maximum Speed: The high?performance CDI box can improve throttle response speed, faster ignition start, increase spark energy, and increase speed limit value, making it a plug in module. Specification: Item Type: CDI Box Unit Reference Part Number: 5KM 85540 10 00, 5KM 85540 00 00, 5KM855401000, 5KM855400000 Number of Plugs: 3 Number of Pins: 18 Fitment: Replacement for ATV YFM660 2002 to 2003 Replacement for Grizzly 660cc (2004-Up) Replacement for YFM 660 R Raptor 2002 to 2003 Note: Please double check the part number of your item, matching information is for reference only.