This kit includes 8 hoses; one lower radiator hose, one upper radiator hose, one water pump to oil cooler hose, one oil cooler to water pipe hose, one cylinder head to heater core hose, water pump to water pipe hose, heater core to block, and one expansion tank hose. Hoses deteriorate over time and it is very difficult to determine if they are about to burst. If you haven't changed your hoses in the last few years, or if one of your hoses has burst, replace them all. It will save you time and money in the long run.
Volkswagen specifies phosphate/silicate-free coolant in all their vehicles. Our German Pentosin coolant exceeds all VW requirements. While you have your cooling system apart, it's a good idea to replace your thermostat.