Cometic C9705 HD EVO 1340 Cylinder Head Gasket 3.8125" Bore .005" Copper

The Cometic C9705 is a premium copper head gasket designed specifically for Harley-Davidson Evolution 1340 engines. Featuring a 3-13/16" (3.8125") bore diameter and a .005" (5 thousandths) compressed thickness, this gasket provides exceptional sealing performance for high-performance and stock applications.

Key Features:

• Pure copper construction for superior heat dissipation and conformability
• 3.8125" bore diameter optimized for HD Evolution 1340 Big Twin engines
• .005" compressed thickness for precise deck height control
• Multi-Layer Stopper (MLS) technology prevents head lift and combustion leakage
• Reusable design allows for multiple installations when properly maintained
• Ideal for high-compression and performance engine builds

Cometic head gaskets are engineered to handle extreme cylinder pressures and temperatures, making them the preferred choice for professional engine builders and performance enthusiasts. The copper material provides excellent thermal conductivity while conforming to imperfect sealing surfaces better than conventional composite gaskets.