1Fitment: CDI model is replacement for Polaris Hawkeye 300 2007, 2009, replacement for Polaris Ranger 400 Carb 2010, 20132014, replacement for Polaris Ranger 500 Carb 20052009. 2Part Number: CDI box igniter replace part number are 3090232, 3089238 for reference. Please double check the part number of your item to ensure perfect fit. 3Function: Ignition CDI box can start the engine quickly, transmit information through the sensor and control the ignition system quickly to improve the engine response speed. 4Performance: The CDI model works stably and can allow your engine to start working again in a short time, solving problems such as poor engine starting and slow starting. 5Ideal Replacement: Fine craftsmanship, this is your ideal option and replacement for your original damaged and old model, perfect for your ATV.