Hello! The original generator is a Delco-Remy model 1101351. I have attached a picture of what it will look like. I have seen a few tractors that had a gerator that looked about the same, but had a much larger Delco-Remy ID tag on them with a different model number, but I have only seen a few like that. Do you know what the serial number of your tractor is? It will be found on a tag located on the firewall under the dash just above the steering column. Let me know if you have any other questions.