Mr. Gasket Ultra-Seal Header Gaskets - 5917 valley-covers 7 V8 1969 - 1973

7 V8 1969 - 1973 Chevrolet Blazer 307/5 V8 1970 - 1972 Chevrolet Brookwood 400/6

6 V8 1967 - 1968 GMC K15/K1500 Suburban 327/5

Fits: Most 2009 & Prior GM Vehicles w/ Plastic Clutch Hose

3L V6 1980 - 1981 Pontiac Bonneville 265/4

Mr. Gasket Ultra-Seal Header Gaskets - 5917 valley-covers 7 V8 1969 - 1973Overview: 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