Yeah its not to hard to replace this part just one thing you may want to make sure of before replacing the whole cylinder head coolant flange (as they call it) is look at the black cap that is in the other hole next to the coolant sensor which is what that blue thing is. When I replaced mine it turned out that I just needed to replace that little black cap which would have saved me a little amount of money plus some time and effort. If your coolant temp sensor is gone as mine was then I would not reccomend going to a local Auto parts store as they don't seem to know jack about Euro cars so just go to ecstuning.com and you can find the entire flange if needed or just the cap and sensor if thats all. Also I think my new sensor was either dark green or black so dont freak out if you don't get a blue one. Good luck and never buy from a stealership and always DIY!