Cometic Chrysler 5.2/5.9L Magnum V8 4.040in Bore .036in MLS Head Gasket - C15535-036 1963 Buick LeSabre Base Feedback from the community has

Feedback from the community has shown the OEM core (crimped onto plastic end tanks) is prone to failure starting at just 27 pounds (psi) of boost pressure

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Cometic Chrysler 5.2/5.9L Magnum V8 4.040in Bore .036in MLS Head Gasket - C15535-036 1963 Buick LeSabre Base Feedback from the community hasThe HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block. Chrysler 5. 2 5. 9L Magnum V8 . 036in. MLS Cylinder Head Gasket; 4. 040in. Bore