Cometic C9619 HD Base Gasket Bore Fiber - 1340 4.0 020 2-Pack

The Cometic C9619 is a high-density fiber cylinder base gasket designed for Harley-Davidson 1340 Evolution Big Twin engines with a 4.0-inch bore. This premium gasket features a .020-inch compressed thickness and is sold as a pair for complete cylinder replacement.

Key Features:

• 4.0-inch (101.6mm) bore diameter for big bore 1340 applications
• .020-inch compressed thickness for precise deck height adjustment
• High-density fiber construction for superior sealing and durability
• Sold in pairs - includes gaskets for both front and rear cylinders
• Designed for S&S and other aftermarket big bore cylinder kits
• Made in the USA with premium materials

Cometic's fiber base gaskets provide excellent sealing characteristics and are ideal for stock to mild performance builds. The .020-inch thickness allows engine builders to fine-tune deck height and compression ratios. These gaskets are engineered to withstand the heat and pressure of V-twin engines while maintaining a reliable seal between the cylinder base and crankcase.