Cometic Harley-Davidson 99-Up Motor Only Kit 4.125in Twin Cams w/.040inH/G - C10121

The Cometic Harley-Davidson 99-Up Motor Only Kit 4.125in Twin Cams w/.040inH/G - C10121 is a precision-engineered head gasket with a compressed thickness of .125".

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.

• Thickness: .125" compressed
• Part Number: C10121