K-Tuned RSX Fan Switch - Used on K-swapped EF, EG, EK and DC2 chassis.
The OEM RSX fan switch is used to control the rad fan on your K-swapped vehicle. The sensor fits in the RSX or EP3 radiator, the K-Tuned swivel neck housing or use an inline adapter in the lower coolant hose. This sensor will trigger the fan on at 95F/204C (factory spec)