Cometic C9027 HD Copper Base Gasket for Harley 1340 Evo .020 Oversize

The Cometic C9027 is a heavy-duty copper base gasket designed specifically for Harley-Davidson 1340cc Evolution engines from 1987-1993. This premium gasket features a .020" oversize thickness to accommodate machined or resurfaced cylinders.

Key Features:

• Constructed from high-quality copper material for superior heat dissipation and conformability
• .020" oversize thickness compensates for cylinder machining and maintains proper compression ratio
• Engineered for 1340cc Harley-Davidson Evolution (Evo) Big Twin engines
• Direct replacement for stock base gaskets on 1987-1993 applications
• Heavy-duty construction ensures reliable sealing under high compression and extreme temperatures

Cometic gaskets are precision-manufactured using advanced materials and processes to provide exceptional sealing performance. The copper construction offers excellent thermal conductivity and the ability to conform to minor surface imperfections, making it ideal for performance and rebuilt engines.