Does BMW 320d has a cam belt?

The BMW 320d does not have a cam belt, it has a timing chain. A cam belt is a toothed rubber belt that drives the camshaft, which in turn controls the opening and closing of the engine's valves. A timing chain is a metal chain that does the same job as a cam belt. Timing chains are generally more durable than cam belts and do not need to be replaced as often.