I had two of these tensioners break on my 408. They break the spring right where it fixes onto the mounting pad. i only know they were broke when I found a strange piece of metal when i changed my oil. First one broke and rubbed agaisnt my stock timing cover, i thought it was a fluke or defect and bought another one. Well it broke in the same spot and rubbed against my nice billet cover. i also replaced the timing set at the same time in case it was the issue, it wasn't. I also checked the clearances and installation to make sure it wasn't something I did. I have since been running with out the tensioner and instead got the roller bearing conversion from comp that replaces the thrust plate with a torrington bearing for less drag.Both tensioners were brand new from mopar performance. first time was a comp hydraulic roller cam, second time was a billet solid roller lunati cam with JP billet timing sets both cases.


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