who can tell me the number of fire alarm in US
No problem changing the brand. If you got an exact replacement for the current unit, you might be able to re-use some of the hardware, like the door bracket. But chances are that Craftsman has changed their product line enough that you'd have to replace everything, anyway. I replaced a Craftsman with a Genie a few years ago. Both are good brands. The Craftsman lasted about 20 years.
AVOID copper fittings. Butane fire on copper gives bad, bad, bad gases. Look for brass usually machined. Look at first 2 pics on the left [ link below ]. You need a brass screen cut into a circle that will jam into the bowl of the 1st picture. If you don't want to cut a brass screen, go to a head shop where they sell black-light posters or incense and ask for a brass screen.
internal coolant leak. possible head gasket or egr cooler.