Manufacturer's Part Number:
Summit Racing Part Number:
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These Doug Thorley header gaskets are custom-made from a high-temperature material that withstands heat up to 1,200 degrees F. It is imperative that you use a gasket for a guaranteed seal every time, and these are some of the toughest out there. In addition to flat gaskets, they also offer a line of conical (donut-style) gaskets made from a graphite composite. Conical gaskets are specifically designed for movement and flexibility. Simply put, Doug Thorley gaskets do not leak.