Using your K - Tuned Driver Side Rad Hose Kit is easy. First, make sure you have a K20 thermostat housing or the K - Tuned Swivel Thermostat KST - UNV - 350 with the thermostat pointing down. If you want to use the OEM rad fan switch, install it in the built - in port of the lower hose. If not, just seal the port with the included plug. You can drill and tap the plug for auxiliary coolant sensors if you need them. Remember to install the single - wire coolant temp gauge sensor in the upper rad hose location. For easier installation, consider adding bolt - on radiator brackets. When it comes to maintenance, regularly check the hoses for any signs of wear or leaks. If you notice any issues or have questions about fitment, don't hesitate to contact us.