Basically when shopping for certain parts are all those model years the same for the following? If not are any of them interchangeable and still work?

Is there a difference between the foreman model to the fourtrax trx350?

Fan control
Cdi box
Alternator
Rectifier

Basically when shopping for certain parts are all those model years the same for the following? If not are any of them interchangeable and still work?

Is there a difference between the foreman model to the fourtrax trx350?

Fan control
Cdi box
Alternator
Rectifier