not really a problem more advice

[Meganedci06]

when changing my fuel filter on my car 1.5dci, i removed the inner wheel arch to get into it as u need to, but notice when looking at the bottom end of the engine i could see a pully with a belt on it, is this the cam belt? or alternator? i dont have the belly plate on so looked really rusty and as my cars got 45/000 on the clock and wondering if i am going to end up with issues if the belt snaps as i havnt changed the timing belt yet.

[AlexB]

These belts serve 5 years.