The originaly GTI spoiler fits on GOLF 6 TDI so you dont have to buy this VOTEX shits
He's right the GTI fits regular golf here are the part numbers you need to make it happen
5K6 827 936 A GRU spoiler primed with interior retaining bracket
5K6 945 087 B additonal brake light
5K0 955 993 C Nozzle
5K6 945 229 attachment bolts quantity 2
5K6 945 229 A Securing Clips quantity 2
you will need to remove the original rear break light with the built in nozzel and install the new nozzle by uplugging the existing hose and hook it up to the new nozzel. The retaining bracket slides into the hole that the old brake light sits in and the painted spoiler skin slides over that. the new additonal brake light mounts into the spoiler using the attachement bolts and securing clips.
you will need to clean the areas that the new spoiler will attach to and put an adhesive primer on the parts that new spoiler is attaching to and tape it on for a day until the glue sets up
The Votex spoiler looks like crap and many of the aftermarket spoilers have extremely poor fitment when it comes to appearance from the side view. Votex is suppost to keep dust of your hatch, but thats hardly the case so dont waste your money thinking its going to keep your car cleaner.