The Cometic Toyota 3K/4K 84mm Bore .043 inch Copper Head Gasket - C4105-043 is a precision-engineered head gasket with a 84mm bore and .043" compressed thickness.
The Cometic Copper head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring Copper construction, this gasket uses solid copper construction for custom thickness adjustment and superior thermal conductivity. 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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Material: Copper
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Bore Size: 84mm
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Thickness: .043" compressed
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Part Number: C4105-043
Verified fitment: Toyota Corolla (1969–1979); Toyota Starlet (1981–1982).