Active Autowerke Replacement Double Sided Pulley Kit Belt - E9X M3 2008+

Replacement double sided belt for your E9X M3 Power Pulley Kit!How to tell if you have a DPK or SINGLE sided belt on your V8 powered M3:Take a look at the water pump belt, you will see that the belt is smooth on one side and has multiple grooves on the flip side. This is referred to as a SINGLE side belt.Take a look at the A/C belt, if the belt looks, feels similar to that of the SINGLE sided belt that drives the water pump. We designate this as a 2007 ONLY model or models produced up 05/2008 which carries a single sided PK belt.Take a look at the A/C belt, if the belt has multiple grooves on either side, then you have a DPK belt. Which is a belt with double PK grooves on both sides. Production model should fall from 6/2008 and up.