This starter solenoid relay is a premium aftermarket replacement compatible with Polaris RZR 170 2009-2020. It acts as the core switch of the starting system, delivering steady power to the starter motor for smooth engine ignition. Made with high-quality internal components and fully sealed outer housing, it effectively resists mud, moisture, bumpy vibration and temperature changes in daily outdoor use. It perfectly solves common problems such as intermittent starting, abnormal clicking and no-start failure, an ideal durable spare part for routine UTV maintenance.