For the retrofit of old Märklin all-current motors you need a permanent magnet. It replaces the present field winding, and in combination with a LokSound – or LokPilot decoder, helps to make your loco run astonishingly smooth. We offer 4 different magnets, depending on the particular armature. You find the armature code number on a spare-parts sheet, which you can download from www.maerklin.de. 51962 Permanent magnet like 235690 and 245480, for armature 231440, D=19.1mm, for motor holder 231350
