REPLACEMENT IGNITION STARTER SWITCHES - An ignition switch, starter switch, or start switch is a switch in the control system of a motor vehicle that activates the main electrical systems for the vehicle. If you have to wiggle the key hard or the ATV won't start when the key is turned, it means you need to replace the engine starter ignition key switch for your ATV. PROFESSIONAL DESIGN - 3-position OFF-RUN-START and 6-pin configuration. This engine ignition switch is made of high-performance ABS and high-quality brass, providing safety, durability, and excellent electrical conductivity. COMPATIBILITY - This ignition key switch is compatible with Polaris Ranger 400, 425, 500, 570, 700, 800, 900, 1000; Polaris RZR 170, 570, 800, 900 XP; Polaris Sportsman 300, 325, 400, 450, 500, 550, 570, 700, 800; Polaris General, Magnum, Brutus, Hawkeye, and more. Replaces part numbers: 4011002, 4012165, 4011142, 4010390, 4012164. Please verify fitment with your model before purchasing. EASY INSTALLATION - Direct replacement with simple plug-and-play setup; no wire splicing required. Meets or exceeds OEM standards. 100% tested before shipping.