I don't know about the other seals but the Valvetronic seal broke where the metal plate meets the rubber part. Also, the hump on the gasket was flush with its frame and seemed too low for a good seal with the valve cover. I ordered and received a different valve seal from another company and now know for sure that the Ensun valve seal is just poorly designed. I hate writing a bad review but collecting things takes a lot of time and effort and I'm just trying to save other people the agony.
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