The Cometic Jaguar 3.8L XK6 .043in CFM Cylinder Head Gasket - 87mm Bore - C4305-043 is a precision-engineered head gasket with a 87mm bore and .043" compressed thickness.
The Cometic premium head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Built with Cometic's premium materials, this gasket meets or exceeds OEM specifications for durability and sealing performance. Precision CNC-machined to exacting tolerances, this gasket seals combustion, water jackets, and oil passages simultaneously — eliminating the need for multiple gaskets or sealing compounds.
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Bore Size: 87mm
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Thickness: .043" compressed
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Part Number: C4305-043
Verified fitment: Jaguar Mark IX (1959–1961); Jaguar Mark X (1962–1964); Jaguar XK150 (1958–1961).