Mr. Gasket Ultra-Seal Header Gaskets - 5910 b-m ZZC3-20-500

ZZC3-20-500

4 V8 1963 - 1969 Chevrolet Biscayne 427/7 V8 1965 - 1969 Chevrolet Biscayne 396/6

6 V8 1971 - 1973 Chevrolet Chevelle 350/5

6 V8 1977 - 1978 GMC C15 Base 305/5 V8 1977 - 1978 GMC C15 Heavy Half 350/5

Mr. Gasket Ultra-Seal Header Gaskets - 5910 b-m ZZC3-20-500Overview: Manufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp