Cometic C5934-066 GM LSX MLS Cylinder Head Gasket Bore - Gen-4 4.125 066

The Cometic C5934-066 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM LSX Gen-4 small block V8 engines. This left-hand side (LHS) gasket features a 4.125-inch bore diameter and a compressed thickness of .066 inches, making it ideal for high-performance and forced induction applications.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under extreme cylinder pressures
• 4.125" bore diameter accommodates stock and mildly overbored LSX Gen-4 engines
• .066" compressed thickness allows for optimal compression ratio tuning
• Designed for left-hand side (driver side) cylinder bank installation
• Embossed stainless steel layers with elastomeric coating ensure consistent clamping pressure
• Resists gasket failure from extreme temperatures and combustion pressures
• Compatible with LS2, LS3, LS7, LS9, and LSA engines

Cometic's MLS gaskets are the professional's choice for engine rebuilds, offering exceptional sealing performance and longevity. The multi-layer construction allows for minor surface imperfections while maintaining a reliable seal, and the gasket's ability to withstand high-boost and high-compression applications makes it perfect for performance builds.