Hey MC , I wish mine went 8years , I guess like anything else , could have been a bad day for whom ever was working that day , or like was previously stated there was a time when the caotings were suspect . I did not have a fresh rebuild when there were installed so I cannot go with that theory either . Just was not meant to be this time . I am in no way bad mouthing the headers at all , very pleased with how they fit , I had heard storys that I would have to ( tweek ) them just to install them but not the case . Fit very well . Just the coating sucked . Gary