The drive belt is the Vauxhall part that drives various other parts including the alternator, PAS pump or air conditioning. The drive belt is driven by the crankshaft pulley.
A drive belt needs to be replaced about every four years, depending on the constructor instructions. In general the Vauxhall drive belt can be reached quite easily by your mechanic. Being quite accessible, it is easy to regularly check its state yourself though.
To find out which drive belt is suitable for your Vauxhall, please enter your model and engine into the search menu.