my mechanic said that it might not be my radiator. the hose or pipe thats connected to it that transports the coolant there was knocked loose so when i put my coolant in it ran straight out on the ground what do you suggest?Looks to me like #23 here:
VOLKSWAGEN BEETLE [BE] (USA) 2002: ENGINE: 12148. COOLANT COOLING SYSTEM
To make proof positive; take the part off and the part number will be molded, on the part itself. If you get the part from your VW dealer; be sure to give them your VIN # to get the correct one for your car. It is a cheap enough part; getting it from a VW dealer isn't a bad idea, the genuine VW plastic cooling parts... tend to last longer then aftermarket cheaper versions.