Cometic C9620 HD Copper Base Gasket Set for Harley EVO 1340 3-5/8" Bore .020" - Pair

The Cometic C9620 is a high-performance copper base gasket set designed specifically for Harley-Davidson Evolution 1340 engines with a 3-5/8" bore. This pair of .020" thick copper head gaskets provides superior sealing and heat dissipation for big twin applications.

Key Features:

• Premium solid copper construction for maximum heat transfer and conformability
• 3.625" (3-5/8") bore diameter optimized for EVO 1340 big twin engines
• .020" (0.020 inch) gasket thickness for precise compression ratio tuning
• Sold as a pair for complete engine rebuild or top-end refresh
• Heavy-duty design withstands high compression and performance applications
• Superior sealing properties compared to composite gaskets

Cometic gaskets are manufactured using advanced materials and precise manufacturing processes to ensure reliable sealing in demanding powersports applications. Copper base gaskets are an excellent choice for performance builds where heat management and sealing integrity are critical.