This thermal fan switch is compatible with the following models: 1090, 1190, 1290, 250, 350, 450 SX-F, XC-F, 500, 450 FE, 250, 350, 501 SMR, RC8, RC8-R, RC8R, XC-F, SX-F, XCF-W, and EXC-F.Designed as a direct replacement, it activates at 105°C to trigger the coolant fan.Built for and consistent performance under regular use conditions, this component matches OEM specifications and allows for straightforward installation without modifications.Suitable for use on the specified models, it provides temperature monitoring and system response.One unit per package.