Cometic C5457-140 Chrysler LA MLS Cylinder Head Gasket Bore - V8 4.125

The Cometic C5457-140 is a high-performance multi-layer steel (MLS) cylinder head gasket engineered specifically for Chrysler LA V8 engines. This gasket features a 4.125-inch bore diameter and a compressed thickness of .140 inches, providing exceptional sealing capability for modified and high-performance applications.

Key Features:

• Multi-layer steel construction for superior durability and heat resistance
• 4.125-inch bore diameter accommodates stock and slightly overbored engines
• .140-inch compressed thickness allows for custom compression ratio tuning
• Advanced MLS technology provides consistent clamping pressure across the entire sealing surface
• Engineered to handle high cylinder pressures in performance and forced induction applications
• Compatible with Chrysler LA small block V8 engines including 318, 340, and 360 cubic inch variants

Cometic MLS gaskets are constructed with multiple layers of stainless steel, featuring a proprietary coating that ensures optimal sealing in high-heat, high-pressure environments. The embossed layers provide micro-sealing at the combustion chamber while maintaining the flexibility needed to conform to minor surface imperfections. This gasket is ideal for performance builds, engine rebuilds, and applications requiring precise compression ratio control.