Hi Adam. Have checked with my mate and that pulley will fit pretty much all the alternators fitted to the Galaxy's. The Laser tool will not let you change the pulley without removing from vehicle as the shaft is too long and hits the plastic shroud behind the headlight. Good news for you that the Sealey tool (part number SX 400) boxed set will let you change it while fitted to vehicle. Found this link for the tool but you will have to add the postage but still a good price for the boxed set. http://www.pvrdirect.co.uk/productinfo.asp...CFQ-mQwodBW68tg Hope this helps