These copper Exhaust / Header gaskets fit the LO 206, Animal and World Formula engines. The Permatex brand ORANGE silicone sealer Part number 81878 should be used on each side of the gasket. It is available from your local Auto Parts Store or mass merchandise store. Do not use red, black, gray or clear sealer.
Like all other exhaust gaskets you need to frequently check the header bolts and keep them tight. It's especially important to re check the header bolts every time you come off the track after replacing the header or gasket. That is also especially true the first time on the track with a new or refreshed engine. KEEP ALL THE HEADER BOLTS TIGHT