Mini Cooper Countryman S All4 Timing Chain Tensioner Replacement. I had the death rattle in my R60 and N18 engine and everything I read or watched said it was a bad timing chain. I finally found one mechanic on YouTube that recommended a tensioner replacement. Because I saw that video I saved myself well over $2000. I made this video to help aware people and save money. Part was $50 :) hope this helps.