BMW 116i F20 F21 N13 engine Rocker cover and gasket replacement

This is a video explains how to replace a rocker cover and gasket. its only a rough guide so do plenty of research and try and have a friend help. it isn't easy. and if you over tighten the bolts your going to crack the rocker cover. if you are taking on this project then you will save yourself a lot of money however it could cost you a lot if you get it wrong, i did and had to buy another cover and gasket. also make sure you get the right part as its time consuming returning parts and waiting for the right part to arrive anyway good luck