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Message: <blockquote data-quote="duff daddy" data-source="post: 790766" data-attributes="member: 10730"><p>Well you have a valid point, however with most aftermarket parts there isn't much of a guarantee due to the nature these cars are intended, straight line or roundy round. Personally I would call them, let them know who you got them from, let them know a date and how much, and say your interested the failed parts replacement. If you have to pay shipping on the old/new part, do it. Just work with them. As far as the actual failure, could be the stud was made of poor quality alloys, too many impurity's, or could have been damaged later on. If your thinking your car go that hot that it could be excessive heat from the headers, your car is way to lean! I doubt it was exhaust gas temps which caused the failure unless you let it run at 5k in 130deg heat for the past 14 months.</p></blockquote><p></p>