It is an F250TXRB. This motor has only 600 hours on it. It will run if you replace an $80 part. However, it was diagnosed with too much end play in a crankshaft thrust bearing. The flywheel moves slightly up and down. My mechanic said it could break at any time. All other parts on this motor are in great shape. I boat in a high current area of NJ and cannot take the chance of it failing at a critical time. So I bought a new motor. It also has a brand new high pressure fuel pump in the vst tank. This motor was maintained meticulously and flushed every time it was used. So if you're looking for a project, or a motor for parts, please let me know. I'm asking $3500. It is presently crated in the crate the new motor came in, and can be loaded into a truck for pick up. It is located in Toms River, NJ. Thanks.