How do you replace the radiator on a Peugeot 307?

i had to replace my radiator on my 307 all i did was remove the mushroom clips and the bolts from the front grille under the bonnet so u can access the mounting bolts for the radiator then as long as u bend it back carefully u can undo the bolts and lift the rad out after u have disconnected the hoses if u do it correctly it should only take about 10 mins to remove and refit a new one if ur in the UK the cheapest place i found for a replacment radiator was gsf car parts

once fitted refill the coolant system and run till warm with the filller cap off to make sure there are no airlocks in it

hope this helps