i was gonna say.......

that goes to your heater core
but then i remembered 90% of ppl on here are lhd lol

but yea... sposed to be capped off :)

hey i hatehacks can you please tell me what hose is in your top picture? the coolant hose that comes off right in the back of the engine? I cant find any information and bought this car a week ago and it blew as its a stock hose.