UTV Starter Solenoid Relay for 400 500 700 800 XP 900 RZR 570 450 570 Trail Boss 330 4012001 ATV Part This starter solenoid relay is constructed with metal and plastic components designed to endure the conditions of off-road use.It supports engine ignition and is built to resist vibrations and harsh environments commonly encountered during off-road.Designed for compatibility with a variety of ATVs and UTVs, this solenoid relay fits models including 400, 500, 700, 800, XP, 900, RZR 570, 900, 450, 570, 700, and Trail Boss 330.The design allows for straightforward installation, making it suitable for users who prefer do-it-yourself to their vehicle's electrical system.The unit meets standard and function requirements for off-road vehicle components.Its construction supports long-term and consistent function across challenging terrains.This solenoid relay serves as a functional replacement part that supports starting function in compatible vehicles.