Hydraulic Cylinder Roof Repair Kit U Cup for 04-11 Compatible With Mercedes SLK 280 350 55 AMG R171

I have mixed feelings on this product. Negatives: I had to make my own tool to remove the clip to free the hydraulic piston. The provided pick tool was not up to the task. Also, the collar and spacer required to reassemble the piston once the new seal is in place did not fit. I had to grind them down quite a bit to make them fit. The written instructions (provided by QR code) are not easy to follow, however I found 3 different YouTube videos that showed the procedure clearly. On the plus side, the seal itself did work once installed and everything was reassembled--thus the 3 stars I'm giving the product.

If you do not have the necessary tools foe this job it will be pretty tough on completing. Like a good file, grinder , punch, vise, sharp drill bits small, small pry hooks (plastic ones supplied not really). I have all these items which were truly needed to get it done.