That is the temp sending unit. Is the crack in the electrical component or the steel item the sensor screws into? As far as the part, you can get them all. However, the if it is the steel component that the sensor screws into, it will be a dealer part or junk yard part. The sensor, which can go bad a leak, can be purchased at any parts store.
Based on the rust color on the hoses, it has been leaking for some time. Also, I would recommend flushing the entire cooling system. It appears as though there is a lot of rust and dirt in the system.
Let me know if you have other questions. As far as the epoxy, IF it works, it will only be a temporary fix.
Wednesday, December 29th, 2010 AT 10:14 PM