You need to apply coolant to the end of the heater inlet hose and install the heater inlet hose to the inlet hose fitting at the engine block. Then you need to position the inlet
Heater Hose clamp at the engine block and install the heater inlet hose to the heater core inlet. After that, you need to press the quick-connect onto the heater core inlet. Finally, you need to fill the engine cooling system.