Does a BMW X3 2005 have a cambelt or a chain?

The 2005 BMW X3 is equipped with a timing chain rather than a cambelt. Timing chains are generally more durable and do not require regular replacement like cambelts do. This means that, under normal circumstances, the timing chain in a 2005 X3 should last for the lifetime of the engine with proper maintenance. However, it's still important to ensure that the engine oil is changed regularly, as this can affect the longevity of the timing chain.