What is this?
 

After i was done with a very good cleaning of the outside of my Irons and Rotor Housing i found this, It looks like a weld but there isnt anything on the inside of the water jacket that would suggest that is was welded.

The only thing that i could think of is one of thows Mazda Reman Temp things.

http://i19.photobucket.com/albums/b1...h_Stuff479.jpg
http://i19.photobucket.com/albums/b1...h_Stuff478.jpg
http://i19.photobucket.com/albums/b1...h_Stuff477.jpg
http://i19.photobucket.com/albums/b1...h_Stuff476.jpg
http://i19.photobucket.com/albums/b1...h_Stuff475.jpg
http://i19.photobucket.com/albums/b1...h_Stuff474.jpg


What you guys think.

Its your car's belly button. duh.

Lol