This starter clutch assembly is compatible with ATV 500 H, ATV 500 H EFI, ATV 700 H, ATV 700 H EFI, UTV 500 H, UTV 700 H, and UTV 700 H EFI models.It corresponds to part numbers LU020212 and 90600-F39-0000.The assembly supports power transmission during engine start-up and helps protect the motor from reverse resistance.When the engine runs, the starter motor engages the overspeed clutch, rotating the crankshaft to activate the piston.Proper maintenance contributes to consistent system function.Product name: Starter Clutch Assembly.Material: Aluminum.Color: As shown in image.Package contents: As shown.