Our Reman "DN" series Alternator is just the ticket for your "D" or 100 series Tractor or anything that takes the "DN" external regulated Alternator.  This is our exchange Alternator. 65 amp rating. Does not come with a pulley. Remove your pulley and install on our Reman. Get that charging system back in shape!
Note:  Whenever you are replacing an Alternator, always make sure the Voltage Regulator is in top working order or replace the VR with at the same time. Always make sure the VR is designed for the Alternator being used!! We can supply you with the correct VR as well.