Lionel 2020M-3 Armature - LN - The 2020M-3 armature is used only in the Lionel 2020M and 671M horizontal motors. This style armature is used in the 1946 horizontal 2020 and 671 versions of the Lionel Turbine. Note that it requires that a gear be installed at the end of the armature shaft once the armature is installed in the motor housing. These armatures are from our stocks and they will run much cooler in the 2020 and 671 horizontal motors, presuming that your motor housing has good bearings and the field windings and brush plate are in good serviceable condition. We will purchase your old motor or just your old armature - ask us, we will even send you a prepaid USPS label to send it to us!