I wish to replace the three belts on my 2000 GU TD42 Turbo. Reading various forums suggest obtaining correctly sized replacements is problematic. My owners manual states the alternator belt size is 13.9 x 1140mm. I can't find info on the sizes of the air conditioning and power steering belts. I would be grateful if someone could tell me the correct belts - codes, part number or some other identifier - by Gates, Bosch or some other manufacturer.