
The Cometic CFM-20 head gasket for 1968–1973 Jaguar 4.2L XK6 (93mm bore, .043in) uses a perforated galvanized steel core with asbestos-free fiber material applied to both sides. The CFM construction requires less clamp load, distributes sealing loads across the area, and is offered without the need for sealants or re-torque. The gasket is described as minimizing bore distortion while providing reliable sealing for the specified Jaguar XK6 engines.
Cometic 1968+ Jaguar 4.2L 6 Cylinder 93mm Bore .043in CFM-20 Head Gasket