Our odometer gears are for speedometers manufactured by VDO and there are multiple tooth count options that can and will be installed to operate your odometer. You will need to count the teeth on the old gear before ordering. The outside gear will have 20 teeth and the smaller inner gear between 21 and 32. {If you cannot count the teeth on the main gear then count the teeth of the next gear that it meshes with. If your tooth count is 49: 20x21, 48: 20x22, 47: 20x23, 41: 20x29, 40: 20x30, 38: 20x32}