checked with my dealer and my cam chain tensioners are covered under my extended warranty. He says if parts are broken off they,re covered, if they,re just worn thin they,re not. Doesn,t make sense to me. I asked him about upgrading to hydraulic or gear, he says just go with new tensioners they,re made a lot stronger now than in 05. O.K. with me it,s free. I can always upgrade later if I want. Just glad God made extended warranties gives me more chrome money.