Product review (5 stars): LG waterline works perfect
My original water line got a pin hole in it on the backside, top-left of the fridge  near the spot where it goes inside the fridge to attach to the filter.  The hose was the perfect size and easy to install.

For me, the hardest part was removing the light assembly to get access to the water filter housing.  Prior to purchasing this part, I had seen a video on how easy this part is to replace.  Downside for me is could not find the video again to review this portion of the repair.

I hope I don't need to fix the other two lines, but if I do, I would not hesitate to purchase this part again.