Just getting the rear engine cover off is hardest bit its a real fiddle, if like me ya got big hands, you can just pop it off it's grommets then once you got it out you have more room to undo bolts, of witch there are two, after that it's easy to pop out seal and push new one in , I never refitted the rear cover ,as without it on you can keep a better eye on the back of the engine for leaks that my develop at a later date , you get a good view up from under with a touch