Cometic C10043 MLS Cylinder Head Gasket Bore Thick - 4.250 040 Pair

The Cometic C10043 Multi-Layer Steel (MLS) cylinder head gasket pair delivers professional-grade sealing performance for high-output engine builds. Featuring a 4.250" bore diameter and .040" compressed thickness, this gasket set is engineered to handle extreme combustion pressures and temperature cycling in demanding performance applications.

Key Features:

• Multi-layer steel construction with multiple embossed layers of stainless steel for superior strength and durability
• Outer layers feature Viton rubber compound coating for resistance to heat up to 482°F and excellent chemical resistance
• Load Control Embossments (LCE) promote even torque distribution across the sealing surface
• Reduces bore distortion for improved piston ring seal and increased power output
• Center shim layer is uncoated stainless steel, allowing thickness customization
• No sealant required for installation
• Ideal for both aluminum-to-aluminum and aluminum-to-cast iron applications
• Sold as a pair (2 gaskets) for complete V-twin engine sealing
• Made in the USA

Cometic MLS gaskets are the preferred choice for racers, engine builders, and performance enthusiasts who demand reliable sealing under boost, high compression, and extreme cylinder pressures. The multi-layer design allows the gasket to rebound and maintain consistent sealing even as combustion forces create movement between the head and block.