Cometic C9905-040 MLS Head Gasket & Tappet Base Gasket Kit 4.250" Bore

The Cometic C9905-040 is a complete top end gasket kit designed for Milwaukee 8 and Twin Cam engines with a 4.250-inch bore. This comprehensive kit includes Multi-Layer Steel (MLS) head gaskets and tappet base gaskets engineered for superior sealing performance in high-performance and stock applications.

Key Features:

• Multi-Layer Steel (MLS) head gasket construction for exceptional sealing and durability
• 4.250-inch bore diameter with 0.040-inch compressed gasket thickness
• Includes head gaskets and tappet base gaskets for complete cylinder head service
• Precision-manufactured for Milwaukee 8 and Twin Cam engines
• Superior torque retention and reusability compared to composite gaskets
• Resists blowout and withstands extreme cylinder pressures

Cometic MLS gaskets feature multiple layers of stainless steel with specialized coatings that provide micro-sealing capabilities while maintaining excellent recovery properties. This kit provides everything needed for cylinder head removal and installation, ensuring proper sealing of critical engine components during rebuilds, performance upgrades, or routine maintenance.