1.Size:18 Coil;Stator Coil outer diameter:125mm;Inner diameter:54mm 2.Applicable Models:Replacement for Polaris Ranger Crew XP RZR 4 Sportsman Scrambler General ACE 570 850 900 1000 2012-2018 3.Material:The ignition magneto stator coil is made of copper coil,full copper-clad steel wire,aluminum plate,with higher power,higher pressure,more stable spark and sensitive throttle. 4.Installation:Easy to install and use,even installation instructions are not included,replace damaged coils,the installation steps are simple,easy to replace, convenient and practical. 5.Reminder/Note:To make sure you buy the right product,please read the product description carefully or the image size.