Cometic C5454-066 MLS Cylinder Head Gasket for Chrysler Gen-2 Hemi 4.280" Bore

The Cometic C5454-066 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chrysler Gen-2 Hemi engines. This high-performance gasket features a 4.280-inch bore diameter and a compressed thickness of .066 inches, providing an excellent balance of sealing capability and compression ratio adjustment for street and performance applications.

Key Features:

• Multi-Layer Steel construction for superior sealing and durability under high cylinder pressures
• 4.280-inch bore diameter designed for Chrysler Gen-2 Hemi engines (5.7L and 6.1L applications)
• .066-inch compressed gasket thickness allows for precise compression ratio tuning
• Advanced MLS design with multiple layers of stainless steel and elastomeric coatings
• Excellent resistance to combustion gases, coolant, and oil
• Maintains seal integrity through heat cycling and thermal expansion
• Embossed sealing beads around critical sealing areas for optimal clamping force distribution

Cometic MLS gaskets are the preferred choice for engine builders and performance enthusiasts who demand maximum reliability. The multi-layer construction allows the gasket to conform to imperfect sealing surfaces while maintaining consistent clamping pressure around combustion chambers, coolant passages, and oil return ports. This gasket is ideal for both stock rebuilds and performance builds requiring precise compression control.