Alternator Drive Belt For Astra MK5 1.7 CDTi 2004-2010 With A/C Z17DTL Z17DTHNewHigh quality EPDM rubberOEM specDirect replacementPlease check compatibility to make sure this belt fits your car, if its for an alternator its important to make sure you check if its with air con or without. If you are unsure please message us with your registration.