it is a pace but it is very old.. probably 10 years!.. its the old style one with 2 x cores inside.. the later ones are 3 cores.
This one bolts up behind your water radiator(on to the battery tray as I remember?) and not to the side of the rad as I previously said..
the picture does not show a pump... is there one with the kit??
if not, expect to pay approx £100 for a replacement..