Today on our Mercedes Benz GLK, we will be reviewing and installing the Hidden Hitch Custom Fit Class 3 trailer hitch receiver. Part number 87636. This is what our receiver hitch will look like once it's installed on the back of our Mercedes Benz GLK. You can see that it's going to have a nice sleek look across the back of the vehicle. It's going to have that nice round tube with the 2 brackets… see more >