Cometa K&N 33-2304 High-Flow Replacement Air Filter

The Cometic C-9473-045 is a complete big bore top end gasket kit designed specifically for 1984-1991 Harley-Davidson Big Twin Evolution engines. This high-performance kit is engineered for 3-13/16" (3.8125") bore applications and includes a premium .045" thick Multi-Layer Steel (MLS) head gasket.

Kit Specifications:

• Bore size: 3-13/16" (3.8125" / 96.84mm) - Big Bore application
• Head gasket thickness: .045" (1.14mm)
• Multi-Layer Steel (MLS) head gasket construction for superior sealing
• Includes complete top end gasket set for comprehensive rebuild
• Designed for Harley-Davidson Evolution Big Twin engines (1984-1991)

Key Features:

• MLS head gaskets feature multiple layers of stainless steel with elastomeric coating for maximum durability
• Superior torque retention and reusability compared to traditional composite gaskets
• Engineered to withstand extreme cylinder pressures in big bore applications
• Precise fitment for aftermarket big bore cylinder installations
• All gaskets manufactured from premium materials for reliable, long-lasting seals

Cometic gaskets are designed and manufactured in the USA using advanced materials and processes. This complete top end kit provides everything needed for a professional engine rebuild or big bore conversion, ensuring proper sealing and optimal performance. The .045" head gasket thickness allows for precise compression ratio tuning in modified applications.