Cometic H2570SPBU045S GM LSX MLS Head Gasket 4.135" Bore .045" Thickness

The Cometic H2570SPBU045S is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered for GM LSX engines with a 4.135-inch bore diameter. This left-side head gasket features a precision .045-inch compressed thickness and is designed to accommodate engines using 1/2-inch head studs.

Key Features:

• Multi-layer stainless steel construction for superior strength and rebound characteristics
• 4.135-inch bore diameter specifically sized for LSX applications
• .045-inch compressed thickness for precise compression control
• Designed for 1/2-inch head stud configurations
• Proprietary high-temperature coating for enhanced corrosion resistance
• Embossed outer layers provide excellent load distribution across sealing surfaces
• Requires less clamp load while reducing bore distortion

Cometic's MLS head gaskets are constructed from multiple embossed layers of both coated and uncoated stainless steel, creating a superior seal that withstands extreme cylinder pressures. The advanced design conforms to various surface finishes and sealing environments, making this gasket ideal for high-performance and racing applications where reliability is critical.