Cometic C10347-040 MLS Head Gasket Pair 4.430" Bore .040" Thick

The Cometic C10347-040 is a pair of heavy-duty Multi-Layer Steel (MLS) head gaskets engineered for high-performance engine builds. These gaskets feature a 4.430" bore diameter with a 4.445" inner diameter and a compressed thickness of .040" (40 thousandths), making them ideal for precision builds requiring specific compression ratios.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 4.430" bore diameter with 4.445" inner diameter for coolant passages
• .040" compressed thickness for precise compression control
• Sold as a pair for V-twin or multi-cylinder applications
• Heavy-duty design withstands extreme cylinder pressures and temperatures
• Stopper layer technology prevents gasket damage and blowout
• Viton rubber coolant seal rings for excellent sealing properties

Cometic MLS head gaskets are manufactured using multiple layers of stainless steel with advanced coating technology, providing maximum sealing capability under severe conditions. The multi-layer design allows the gasket to conform to imperfections in the sealing surfaces while maintaining excellent recovery properties. These gaskets are particularly well-suited for boosted applications, high-compression builds, and racing engines where reliability is critical.